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Finding the Fourth Proportional to 18,249.90, 27,375.66 and 7,155.60

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Solution

The fourth proportional to 18,249.90, 27,375.66 and 7,155.60 is: 10,733.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,249.90 : 27,375.66 = 7,155.60 : x
  2. Step 2: Convert to fraction form
    18,249.90/27,375.66 = 7,155.60/x
  3. Step 3: Cross multiply
    18,249.90x = 27,375.66 × 7,155.60
  4. Step 4: Simplify right side
    18,249.90x = 195,889,272.70
  5. Step 5: Solve for x
    x = 195,889,272.70/18,249.90
  6. Step 6: Final answer
    x = 10,733.72

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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.