Home / 18,811.92-28,222.20-6,331.61

Finding the Fourth Proportional to 18,811.92, 28,222.20 and 6,331.61

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Solution

The fourth proportional to 18,811.92, 28,222.20 and 6,331.61 is: 9,498.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.92 : 28,222.20 = 6,331.61 : x
  2. Step 2: Convert to fraction form
    18,811.92/28,222.20 = 6,331.61/x
  3. Step 3: Cross multiply
    18,811.92x = 28,222.20 × 6,331.61
  4. Step 4: Simplify right side
    18,811.92x = 178,691,822.63
  5. Step 5: Solve for x
    x = 178,691,822.63/18,811.92
  6. Step 6: Final answer
    x = 9,498.86

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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.