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Finding the Fourth Proportional to 29,479, 40,681.02 and 16,231

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Solution

The fourth proportional to 29,479, 40,681.02 and 16,231 is: 22,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,479 : 40,681.02 = 16,231 : x
  2. Step 2: Convert to fraction form
    29,479/40,681.02 = 16,231/x
  3. Step 3: Cross multiply
    29,479x = 40,681.02 × 16,231
  4. Step 4: Simplify right side
    29,479x = 660,293,635.62
  5. Step 5: Solve for x
    x = 660,293,635.62/29,479
  6. Step 6: Final answer
    x = 22,398.78

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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.