Home / 18,591,781.62-25,659,701.31-15,489,385.44

Finding the Fourth Proportional to 18,591,781.62, 25,659,701.31 and 15,489,385.44

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Solution

The fourth proportional to 18,591,781.62, 25,659,701.31 and 15,489,385.44 is: 21,377,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591,781.62 : 25,659,701.31 = 15,489,385.44 : x
  2. Step 2: Convert to fraction form
    18,591,781.62/25,659,701.31 = 15,489,385.44/x
  3. Step 3: Cross multiply
    18,591,781.62x = 25,659,701.31 × 15,489,385.44
  4. Step 4: Simplify right side
    18,591,781.62x = 397,453,003,865,862.88
  5. Step 5: Solve for x
    x = 397,453,003,865,862.88/18,591,781.62
  6. Step 6: Final answer
    x = 21,377,886.85

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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.