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Finding the Fourth Proportional to 10,781.52, 16,162.08 and 4,934.64

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Solution

The fourth proportional to 10,781.52, 16,162.08 and 4,934.64 is: 7,397.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.52 : 16,162.08 = 4,934.64 : x
  2. Step 2: Convert to fraction form
    10,781.52/16,162.08 = 4,934.64/x
  3. Step 3: Cross multiply
    10,781.52x = 16,162.08 × 4,934.64
  4. Step 4: Simplify right side
    10,781.52x = 79,754,046.45
  5. Step 5: Solve for x
    x = 79,754,046.45/10,781.52
  6. Step 6: Final answer
    x = 7,397.29

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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.