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Finding the Fourth Proportional to 18,144.60, 27,200.49 and 12,600.55

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Solution

The fourth proportional to 18,144.60, 27,200.49 and 12,600.55 is: 18,889.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,144.60 : 27,200.49 = 12,600.55 : x
  2. Step 2: Convert to fraction form
    18,144.60/27,200.49 = 12,600.55/x
  3. Step 3: Cross multiply
    18,144.60x = 27,200.49 × 12,600.55
  4. Step 4: Simplify right side
    18,144.60x = 342,741,134.27
  5. Step 5: Solve for x
    x = 342,741,134.27/18,144.60
  6. Step 6: Final answer
    x = 18,889.43

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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.