Home / 20,553,489.18-28,361,747.97-11,384,418.78

Finding the Fourth Proportional to 20,553,489.18, 28,361,747.97 and 11,384,418.78

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Solution

The fourth proportional to 20,553,489.18, 28,361,747.97 and 11,384,418.78 is: 15,709,352.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553,489.18 : 28,361,747.97 = 11,384,418.78 : x
  2. Step 2: Convert to fraction form
    20,553,489.18/28,361,747.97 = 11,384,418.78/x
  3. Step 3: Cross multiply
    20,553,489.18x = 28,361,747.97 × 11,384,418.78
  4. Step 4: Simplify right side
    20,553,489.18x = 322,882,016,223,294.88
  5. Step 5: Solve for x
    x = 322,882,016,223,294.88/20,553,489.18
  6. Step 6: Final answer
    x = 15,709,352.97

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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.