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Finding the Fourth Proportional to 18,043.40, 27,067.24 and 7,520.55

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Solution

The fourth proportional to 18,043.40, 27,067.24 and 7,520.55 is: 11,281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.40 : 27,067.24 = 7,520.55 : x
  2. Step 2: Convert to fraction form
    18,043.40/27,067.24 = 7,520.55/x
  3. Step 3: Cross multiply
    18,043.40x = 27,067.24 × 7,520.55
  4. Step 4: Simplify right side
    18,043.40x = 203,560,418.53
  5. Step 5: Solve for x
    x = 203,560,418.53/18,043.40
  6. Step 6: Final answer
    x = 11,281.71

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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.