Home / 20,695.20-31,057.20-9,016.80

Finding the Fourth Proportional to 20,695.20, 31,057.20 and 9,016.80

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Solution

The fourth proportional to 20,695.20, 31,057.20 and 9,016.80 is: 13,531.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.20 : 31,057.20 = 9,016.80 : x
  2. Step 2: Convert to fraction form
    20,695.20/31,057.20 = 9,016.80/x
  3. Step 3: Cross multiply
    20,695.20x = 31,057.20 × 9,016.80
  4. Step 4: Simplify right side
    20,695.20x = 280,036,560.96
  5. Step 5: Solve for x
    x = 280,036,560.96/20,695.20
  6. Step 6: Final answer
    x = 13,531.47

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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.