Home / 27,619.20-41,428.80-9,151.20

Finding the Fourth Proportional to 27,619.20, 41,428.80 and 9,151.20

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Solution

The fourth proportional to 27,619.20, 41,428.80 and 9,151.20 is: 13,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,619.20 : 41,428.80 = 9,151.20 : x
  2. Step 2: Convert to fraction form
    27,619.20/41,428.80 = 9,151.20/x
  3. Step 3: Cross multiply
    27,619.20x = 41,428.80 × 9,151.20
  4. Step 4: Simplify right side
    27,619.20x = 379,123,234.56
  5. Step 5: Solve for x
    x = 379,123,234.56/27,619.20
  6. Step 6: Final answer
    x = 13,726.80

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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.