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Finding the Fourth Proportional to 29,379, 40,543.02 and 16,131

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Solution

The fourth proportional to 29,379, 40,543.02 and 16,131 is: 22,260.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,379 : 40,543.02 = 16,131 : x
  2. Step 2: Convert to fraction form
    29,379/40,543.02 = 16,131/x
  3. Step 3: Cross multiply
    29,379x = 40,543.02 × 16,131
  4. Step 4: Simplify right side
    29,379x = 653,999,455.62
  5. Step 5: Solve for x
    x = 653,999,455.62/29,379
  6. Step 6: Final answer
    x = 22,260.78

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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.