Home / 18,105.30-27,138.60-7,572.66

Finding the Fourth Proportional to 18,105.30, 27,138.60 and 7,572.66

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Solution

The fourth proportional to 18,105.30, 27,138.60 and 7,572.66 is: 11,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.30 : 27,138.60 = 7,572.66 : x
  2. Step 2: Convert to fraction form
    18,105.30/27,138.60 = 7,572.66/x
  3. Step 3: Cross multiply
    18,105.30x = 27,138.60 × 7,572.66
  4. Step 4: Simplify right side
    18,105.30x = 205,511,390.68
  5. Step 5: Solve for x
    x = 205,511,390.68/18,105.30
  6. Step 6: Final answer
    x = 11,350.90

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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.