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Finding the Fourth Proportional to 18,250.20, 27,375.30 and 8,408.70

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Solution

The fourth proportional to 18,250.20, 27,375.30 and 8,408.70 is: 12,613.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,250.20 : 27,375.30 = 8,408.70 : x
  2. Step 2: Convert to fraction form
    18,250.20/27,375.30 = 8,408.70/x
  3. Step 3: Cross multiply
    18,250.20x = 27,375.30 × 8,408.70
  4. Step 4: Simplify right side
    18,250.20x = 230,190,685.11
  5. Step 5: Solve for x
    x = 230,190,685.11/18,250.20
  6. Step 6: Final answer
    x = 12,613.05

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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.