Home / 20,250.81-30,372.66-5,456.43

Finding the Fourth Proportional to 20,250.81, 30,372.66 and 5,456.43

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Solution

The fourth proportional to 20,250.81, 30,372.66 and 5,456.43 is: 8,183.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.81 : 30,372.66 = 5,456.43 : x
  2. Step 2: Convert to fraction form
    20,250.81/30,372.66 = 5,456.43/x
  3. Step 3: Cross multiply
    20,250.81x = 30,372.66 × 5,456.43
  4. Step 4: Simplify right side
    20,250.81x = 165,726,293.20
  5. Step 5: Solve for x
    x = 165,726,293.20/20,250.81
  6. Step 6: Final answer
    x = 8,183.69

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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.