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Finding the Fourth Proportional to 18,549.99, 27,834.11 and 8,687.56

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Solution

The fourth proportional to 18,549.99, 27,834.11 and 8,687.56 is: 13,035.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,549.99 : 27,834.11 = 8,687.56 : x
  2. Step 2: Convert to fraction form
    18,549.99/27,834.11 = 8,687.56/x
  3. Step 3: Cross multiply
    18,549.99x = 27,834.11 × 8,687.56
  4. Step 4: Simplify right side
    18,549.99x = 241,810,500.67
  5. Step 5: Solve for x
    x = 241,810,500.67/18,549.99
  6. Step 6: Final answer
    x = 13,035.61

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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.