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Finding the Fourth Proportional to 18,337.20, 27,505.80 and 4,486.20

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Solution

The fourth proportional to 18,337.20, 27,505.80 and 4,486.20 is: 6,729.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,337.20 : 27,505.80 = 4,486.20 : x
  2. Step 2: Convert to fraction form
    18,337.20/27,505.80 = 4,486.20/x
  3. Step 3: Cross multiply
    18,337.20x = 27,505.80 × 4,486.20
  4. Step 4: Simplify right side
    18,337.20x = 123,396,519.96
  5. Step 5: Solve for x
    x = 123,396,519.96/18,337.20
  6. Step 6: Final answer
    x = 6,729.30

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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.