Home / 21,690,358.20-29,932,691.81-12,398,126.90

Finding the Fourth Proportional to 21,690,358.20, 29,932,691.81 and 12,398,126.90

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Solution

The fourth proportional to 21,690,358.20, 29,932,691.81 and 12,398,126.90 is: 17,109,413.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690,358.20 : 29,932,691.81 = 12,398,126.90 : x
  2. Step 2: Convert to fraction form
    21,690,358.20/29,932,691.81 = 12,398,126.90/x
  3. Step 3: Cross multiply
    21,690,358.20x = 29,932,691.81 × 12,398,126.90
  4. Step 4: Simplify right side
    21,690,358.20x = 371,109,311,307,316.56
  5. Step 5: Solve for x
    x = 371,109,311,307,316.56/21,690,358.20
  6. Step 6: Final answer
    x = 17,109,413.68

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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.