Home / 12,124,906.20-18,187,359.30-11,321,839.80

Finding the Fourth Proportional to 12,124,906.20, 18,187,359.30 and 11,321,839.80

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Solution

The fourth proportional to 12,124,906.20, 18,187,359.30 and 11,321,839.80 is: 16,982,759.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124,906.20 : 18,187,359.30 = 11,321,839.80 : x
  2. Step 2: Convert to fraction form
    12,124,906.20/18,187,359.30 = 11,321,839.80/x
  3. Step 3: Cross multiply
    12,124,906.20x = 18,187,359.30 × 11,321,839.80
  4. Step 4: Simplify right side
    12,124,906.20x = 205,914,368,379,640.16
  5. Step 5: Solve for x
    x = 205,914,368,379,640.16/12,124,906.20
  6. Step 6: Final answer
    x = 16,982,759.70

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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.