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Finding the Fourth Proportional to 18,331.24, 27,515.09 and 8,472.73

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Solution

The fourth proportional to 18,331.24, 27,515.09 and 8,472.73 is: 12,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.24 : 27,515.09 = 8,472.73 : x
  2. Step 2: Convert to fraction form
    18,331.24/27,515.09 = 8,472.73/x
  3. Step 3: Cross multiply
    18,331.24x = 27,515.09 × 8,472.73
  4. Step 4: Simplify right side
    18,331.24x = 233,127,928.50
  5. Step 5: Solve for x
    x = 233,127,928.50/18,331.24
  6. Step 6: Final answer
    x = 12,717.52

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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.