Home / 18,792,126.30-28,188,189.45-9,815,511.90

Finding the Fourth Proportional to 18,792,126.30, 28,188,189.45 and 9,815,511.90

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Solution

The fourth proportional to 18,792,126.30, 28,188,189.45 and 9,815,511.90 is: 14,723,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792,126.30 : 28,188,189.45 = 9,815,511.90 : x
  2. Step 2: Convert to fraction form
    18,792,126.30/28,188,189.45 = 9,815,511.90/x
  3. Step 3: Cross multiply
    18,792,126.30x = 28,188,189.45 × 9,815,511.90
  4. Step 4: Simplify right side
    18,792,126.30x = 276,681,508,985,929.47
  5. Step 5: Solve for x
    x = 276,681,508,985,929.47/18,792,126.30
  6. Step 6: Final answer
    x = 14,723,267.85

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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.