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Finding the Fourth Proportional to 18,131.71, 27,198.88 and 7,591.13

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Solution

The fourth proportional to 18,131.71, 27,198.88 and 7,591.13 is: 11,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.71 : 27,198.88 = 7,591.13 : x
  2. Step 2: Convert to fraction form
    18,131.71/27,198.88 = 7,591.13/x
  3. Step 3: Cross multiply
    18,131.71x = 27,198.88 × 7,591.13
  4. Step 4: Simplify right side
    18,131.71x = 206,470,059.98
  5. Step 5: Solve for x
    x = 206,470,059.98/18,131.71
  6. Step 6: Final answer
    x = 11,387.24

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1.5x scale

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.