Home / 11,839.52-17,755.10-3,939.90

Finding the Fourth Proportional to 11,839.52, 17,755.10 and 3,939.90

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Solution

The fourth proportional to 11,839.52, 17,755.10 and 3,939.90 is: 5,908.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,839.52 : 17,755.10 = 3,939.90 : x
  2. Step 2: Convert to fraction form
    11,839.52/17,755.10 = 3,939.90/x
  3. Step 3: Cross multiply
    11,839.52x = 17,755.10 × 3,939.90
  4. Step 4: Simplify right side
    11,839.52x = 69,953,318.49
  5. Step 5: Solve for x
    x = 69,953,318.49/11,839.52
  6. Step 6: Final answer
    x = 5,908.46

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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.