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Finding the Fourth Proportional to 18,039.67, 27,059.97 and 8,549.78

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Solution

The fourth proportional to 18,039.67, 27,059.97 and 8,549.78 is: 12,824.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,039.67 : 27,059.97 = 8,549.78 : x
  2. Step 2: Convert to fraction form
    18,039.67/27,059.97 = 8,549.78/x
  3. Step 3: Cross multiply
    18,039.67x = 27,059.97 × 8,549.78
  4. Step 4: Simplify right side
    18,039.67x = 231,356,687.07
  5. Step 5: Solve for x
    x = 231,356,687.07/18,039.67
  6. Step 6: Final answer
    x = 12,824.88

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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.