Home / 18,591,780.12-25,659,699.24-15,489,383.94

Finding the Fourth Proportional to 18,591,780.12, 25,659,699.24 and 15,489,383.94

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Solution

The fourth proportional to 18,591,780.12, 25,659,699.24 and 15,489,383.94 is: 21,377,884.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591,780.12 : 25,659,699.24 = 15,489,383.94 : x
  2. Step 2: Convert to fraction form
    18,591,780.12/25,659,699.24 = 15,489,383.94/x
  3. Step 3: Cross multiply
    18,591,780.12x = 25,659,699.24 × 15,489,383.94
  4. Step 4: Simplify right side
    18,591,780.12x = 397,452,933,313,286.19
  5. Step 5: Solve for x
    x = 397,452,933,313,286.19/18,591,780.12
  6. Step 6: Final answer
    x = 21,377,884.78

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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.