Home / 38,121.55-57,105.78-21,456.61

Finding the Fourth Proportional to 38,121.55, 57,105.78 and 21,456.61

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Solution

The fourth proportional to 38,121.55, 57,105.78 and 21,456.61 is: 32,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,121.55 : 57,105.78 = 21,456.61 : x
  2. Step 2: Convert to fraction form
    38,121.55/57,105.78 = 21,456.61/x
  3. Step 3: Cross multiply
    38,121.55x = 57,105.78 × 21,456.61
  4. Step 4: Simplify right side
    38,121.55x = 1,225,296,450.21
  5. Step 5: Solve for x
    x = 1,225,296,450.21/38,121.55
  6. Step 6: Final answer
    x = 32,141.83

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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.