Home / 19,972,121.70-29,940,686.55-13,561,587.30

Finding the Fourth Proportional to 19,972,121.70, 29,940,686.55 and 13,561,587.30

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Solution

The fourth proportional to 19,972,121.70, 29,940,686.55 and 13,561,587.30 is: 20,330,500.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972,121.70 : 29,940,686.55 = 13,561,587.30 : x
  2. Step 2: Convert to fraction form
    19,972,121.70/29,940,686.55 = 13,561,587.30/x
  3. Step 3: Cross multiply
    19,972,121.70x = 29,940,686.55 × 13,561,587.30
  4. Step 4: Simplify right side
    19,972,121.70x = 406,043,234,469,760.88
  5. Step 5: Solve for x
    x = 406,043,234,469,760.88/19,972,121.70
  6. Step 6: Final answer
    x = 20,330,500.71

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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.