Home / 20,211.92-30,321.32-7,733.04

Finding the Fourth Proportional to 20,211.92, 30,321.32 and 7,733.04

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Solution

The fourth proportional to 20,211.92, 30,321.32 and 7,733.04 is: 11,600.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.92 : 30,321.32 = 7,733.04 : x
  2. Step 2: Convert to fraction form
    20,211.92/30,321.32 = 7,733.04/x
  3. Step 3: Cross multiply
    20,211.92x = 30,321.32 × 7,733.04
  4. Step 4: Simplify right side
    20,211.92x = 234,475,980.41
  5. Step 5: Solve for x
    x = 234,475,980.41/20,211.92
  6. Step 6: Final answer
    x = 11,600.88

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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.