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Finding the Fourth Proportional to 18,039.61, 27,059.89 and 8,549.71

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Solution

The fourth proportional to 18,039.61, 27,059.89 and 8,549.71 is: 12,824.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,039.61 : 27,059.89 = 8,549.71 : x
  2. Step 2: Convert to fraction form
    18,039.61/27,059.89 = 8,549.71/x
  3. Step 3: Cross multiply
    18,039.61x = 27,059.89 × 8,549.71
  4. Step 4: Simplify right side
    18,039.61x = 231,354,076.83
  5. Step 5: Solve for x
    x = 231,354,076.83/18,039.61
  6. Step 6: Final answer
    x = 12,824.78

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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.