Home / 20,942.76-31,419.54-6,152.16

Finding the Fourth Proportional to 20,942.76, 31,419.54 and 6,152.16

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Solution

The fourth proportional to 20,942.76, 31,419.54 and 6,152.16 is: 9,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.76 : 31,419.54 = 6,152.16 : x
  2. Step 2: Convert to fraction form
    20,942.76/31,419.54 = 6,152.16/x
  3. Step 3: Cross multiply
    20,942.76x = 31,419.54 × 6,152.16
  4. Step 4: Simplify right side
    20,942.76x = 193,298,037.21
  5. Step 5: Solve for x
    x = 193,298,037.21/20,942.76
  6. Step 6: Final answer
    x = 9,229.83

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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.