Home / 20,912,147.09-31,380,497.92-8,780,677.66

Finding the Fourth Proportional to 20,912,147.09, 31,380,497.92 and 8,780,677.66

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Solution

The fourth proportional to 20,912,147.09, 31,380,497.92 and 8,780,677.66 is: 13,176,171.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912,147.09 : 31,380,497.92 = 8,780,677.66 : x
  2. Step 2: Convert to fraction form
    20,912,147.09/31,380,497.92 = 8,780,677.66/x
  3. Step 3: Cross multiply
    20,912,147.09x = 31,380,497.92 × 8,780,677.66
  4. Step 4: Simplify right side
    20,912,147.09x = 275,542,037,096,021.97
  5. Step 5: Solve for x
    x = 275,542,037,096,021.97/20,912,147.09
  6. Step 6: Final answer
    x = 13,176,171.53

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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.