{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://askcalculators.com/calculator/fractions-solve-for-unknown-calculator/schema.json",
  "title": "Fractions Solve for Unknown Calculator inputs",
  "description": "Solve an unknown term in an equivalent-fractions proportion a/b = c/d.",
  "type": "object",
  "properties": {
    "unknown": {
      "title": "Unknown term",
      "type": "string",
      "default": "d",
      "enum": [
        "a",
        "b",
        "c",
        "d"
      ],
      "x-optionLabels": {
        "a": "a in a/b = c/d",
        "b": "b in a/b = c/d",
        "c": "c in a/b = c/d",
        "d": "d in a/b = c/d"
      }
    },
    "a": {
      "title": "a",
      "type": "number",
      "default": 3,
      "x-step": 1,
      "multipleOf": 1
    },
    "b": {
      "title": "b",
      "type": "number",
      "default": 4,
      "x-step": 1,
      "multipleOf": 1
    },
    "c": {
      "title": "c",
      "type": "number",
      "default": 9,
      "x-step": 1,
      "multipleOf": 1
    },
    "d": {
      "title": "d",
      "type": "number",
      "default": 12,
      "x-step": 1,
      "multipleOf": 1
    }
  },
  "required": [
    "unknown",
    "a",
    "b",
    "c",
    "d"
  ],
  "additionalProperties": false,
  "x-askcalculators": {
    "version": "1.0.0",
    "calculatorUrl": "https://askcalculators.com/calculator/fractions-solve-for-unknown-calculator/",
    "queryExample": "https://askcalculators.com/calculator/fractions-solve-for-unknown-calculator/?unknown=d&a=3&b=4&c=9&d=12",
    "migrationStatus": "new",
    "reviewStatus": "pending",
    "pageStatus": "live",
    "workStatus": "pending",
    "formula": {
      "expression": "a/b = c/d, so ad = bc"
    },
    "quality": {
      "availability": "live",
      "technicalReviewRecord": "/reviews/fractions-solve-for-unknown-calculator.json",
      "qualifiedReview": "pending",
      "qualifiedReviewer": null,
      "qualifiedReviewDate": null,
      "formulaVersion": "1.0.0",
      "referenceCoverage": "references-pending",
      "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
      "historicalMetadataDate": "2026-09-01",
      "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
    },
    "outputs": {
      "solution": {
        "title": "Unknown value",
        "type": "number",
        "x-format": "number",
        "x-digits": 12,
        "x-primary": true
      },
      "equation": {
        "title": "Completed proportion",
        "type": "string",
        "x-format": "text"
      },
      "crossProducts": {
        "title": "Cross-products check",
        "type": "string",
        "x-format": "text"
      }
    }
  }
}