Home / 39,440.92-54,428.19-21,535.91

Finding the Fourth Proportional to 39,440.92, 54,428.19 and 21,535.91

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Solution

The fourth proportional to 39,440.92, 54,428.19 and 21,535.91 is: 29,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,440.92 : 54,428.19 = 21,535.91 : x
  2. Step 2: Convert to fraction form
    39,440.92/54,428.19 = 21,535.91/x
  3. Step 3: Cross multiply
    39,440.92x = 54,428.19 × 21,535.91
  4. Step 4: Simplify right side
    39,440.92x = 1,172,160,601.30
  5. Step 5: Solve for x
    x = 1,172,160,601.30/39,440.92
  6. Step 6: Final answer
    x = 29,719.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.