Home / 25,531.05-38,296.68-7,761.90

Finding the Fourth Proportional to 25,531.05, 38,296.68 and 7,761.90

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Solution

The fourth proportional to 25,531.05, 38,296.68 and 7,761.90 is: 11,642.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,531.05 : 38,296.68 = 7,761.90 : x
  2. Step 2: Convert to fraction form
    25,531.05/38,296.68 = 7,761.90/x
  3. Step 3: Cross multiply
    25,531.05x = 38,296.68 × 7,761.90
  4. Step 4: Simplify right side
    25,531.05x = 297,255,000.49
  5. Step 5: Solve for x
    x = 297,255,000.49/25,531.05
  6. Step 6: Final answer
    x = 11,642.88

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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.