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Finding the Fourth Proportional to 19,373,655.80, 29,123,469.30 and 13,732,945.40

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Solution

The fourth proportional to 19,373,655.80, 29,123,469.30 and 13,732,945.40 is: 20,644,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,373,655.80 : 29,123,469.30 = 13,732,945.40 : x
  2. Step 2: Convert to fraction form
    19,373,655.80/29,123,469.30 = 13,732,945.40/x
  3. Step 3: Cross multiply
    19,373,655.80x = 29,123,469.30 × 13,732,945.40
  4. Step 4: Simplify right side
    19,373,655.80x = 399,951,013,755,476.25
  5. Step 5: Solve for x
    x = 399,951,013,755,476.25/19,373,655.80
  6. Step 6: Final answer
    x = 20,644,065.21

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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.