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Finding the Fourth Proportional to 18,452.70, 27,657.45 and 7,922.70

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Solution

The fourth proportional to 18,452.70, 27,657.45 and 7,922.70 is: 11,874.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,452.70 : 27,657.45 = 7,922.70 : x
  2. Step 2: Convert to fraction form
    18,452.70/27,657.45 = 7,922.70/x
  3. Step 3: Cross multiply
    18,452.70x = 27,657.45 × 7,922.70
  4. Step 4: Simplify right side
    18,452.70x = 219,121,679.12
  5. Step 5: Solve for x
    x = 219,121,679.12/18,452.70
  6. Step 6: Final answer
    x = 11,874.78

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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.