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Finding the Fourth Proportional to 15,902.52, 21,945.78 and 8,732.40

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Solution

The fourth proportional to 15,902.52, 21,945.78 and 8,732.40 is: 12,050.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.52 : 21,945.78 = 8,732.40 : x
  2. Step 2: Convert to fraction form
    15,902.52/21,945.78 = 8,732.40/x
  3. Step 3: Cross multiply
    15,902.52x = 21,945.78 × 8,732.40
  4. Step 4: Simplify right side
    15,902.52x = 191,639,329.27
  5. Step 5: Solve for x
    x = 191,639,329.27/15,902.52
  6. Step 6: Final answer
    x = 12,050.88

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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.