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Finding the Fourth Proportional to 39,351.92, 54,305.72 and 21,446.92

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Solution

The fourth proportional to 39,351.92, 54,305.72 and 21,446.92 is: 29,596.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,351.92 : 54,305.72 = 21,446.92 : x
  2. Step 2: Convert to fraction form
    39,351.92/54,305.72 = 21,446.92/x
  3. Step 3: Cross multiply
    39,351.92x = 54,305.72 × 21,446.92
  4. Step 4: Simplify right side
    39,351.92x = 1,164,690,432.38
  5. Step 5: Solve for x
    x = 1,164,690,432.38/39,351.92
  6. Step 6: Final answer
    x = 29,596.79

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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.