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Finding the Fourth Proportional to 18,752,304.80, 28,129,545.78 and 7,237,836.02

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Solution

The fourth proportional to 18,752,304.80, 28,129,545.78 and 7,237,836.02 is: 10,857,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752,304.80 : 28,129,545.78 = 7,237,836.02 : x
  2. Step 2: Convert to fraction form
    18,752,304.80/28,129,545.78 = 7,237,836.02/x
  3. Step 3: Cross multiply
    18,752,304.80x = 28,129,545.78 × 7,237,836.02
  4. Step 4: Simplify right side
    18,752,304.80x = 203,597,039,672,723
  5. Step 5: Solve for x
    x = 203,597,039,672,723/18,752,304.80
  6. Step 6: Final answer
    x = 10,857,174.19

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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.