Home / 20,837.96-31,258.40-7,691.24

Finding the Fourth Proportional to 20,837.96, 31,258.40 and 7,691.24

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Solution

The fourth proportional to 20,837.96, 31,258.40 and 7,691.24 is: 11,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.96 : 31,258.40 = 7,691.24 : x
  2. Step 2: Convert to fraction form
    20,837.96/31,258.40 = 7,691.24/x
  3. Step 3: Cross multiply
    20,837.96x = 31,258.40 × 7,691.24
  4. Step 4: Simplify right side
    20,837.96x = 240,415,856.42
  5. Step 5: Solve for x
    x = 240,415,856.42/20,837.96
  6. Step 6: Final answer
    x = 11,537.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.