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Finding the Fourth Proportional to 18,331.76, 27,490.80 and 7,234.76

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Solution

The fourth proportional to 18,331.76, 27,490.80 and 7,234.76 is: 10,849.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.76 : 27,490.80 = 7,234.76 : x
  2. Step 2: Convert to fraction form
    18,331.76/27,490.80 = 7,234.76/x
  3. Step 3: Cross multiply
    18,331.76x = 27,490.80 × 7,234.76
  4. Step 4: Simplify right side
    18,331.76x = 198,889,340.21
  5. Step 5: Solve for x
    x = 198,889,340.21/18,331.76
  6. Step 6: Final answer
    x = 10,849.44

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.