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Finding the Fourth Proportional to 18,158.08, 27,218.88 and 11,591.68

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Solution

The fourth proportional to 18,158.08, 27,218.88 and 11,591.68 is: 17,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,158.08 : 27,218.88 = 11,591.68 : x
  2. Step 2: Convert to fraction form
    18,158.08/27,218.88 = 11,591.68/x
  3. Step 3: Cross multiply
    18,158.08x = 27,218.88 × 11,591.68
  4. Step 4: Simplify right side
    18,158.08x = 315,512,546.92
  5. Step 5: Solve for x
    x = 315,512,546.92/18,158.08
  6. Step 6: Final answer
    x = 17,375.88

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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.