Home / 20,982.66-31,467.30-8,505.82

Finding the Fourth Proportional to 20,982.66, 31,467.30 and 8,505.82

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Solution

The fourth proportional to 20,982.66, 31,467.30 and 8,505.82 is: 12,756.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.66 : 31,467.30 = 8,505.82 : x
  2. Step 2: Convert to fraction form
    20,982.66/31,467.30 = 8,505.82/x
  3. Step 3: Cross multiply
    20,982.66x = 31,467.30 × 8,505.82
  4. Step 4: Simplify right side
    20,982.66x = 267,655,189.69
  5. Step 5: Solve for x
    x = 267,655,189.69/20,982.66
  6. Step 6: Final answer
    x = 12,756.02

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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.