Home / 20,524.28-30,781.96-5,531.05

Finding the Fourth Proportional to 20,524.28, 30,781.96 and 5,531.05

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Solution

The fourth proportional to 20,524.28, 30,781.96 and 5,531.05 is: 8,295.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,524.28 : 30,781.96 = 5,531.05 : x
  2. Step 2: Convert to fraction form
    20,524.28/30,781.96 = 5,531.05/x
  3. Step 3: Cross multiply
    20,524.28x = 30,781.96 × 5,531.05
  4. Step 4: Simplify right side
    20,524.28x = 170,256,559.86
  5. Step 5: Solve for x
    x = 170,256,559.86/20,524.28
  6. Step 6: Final answer
    x = 8,295.37

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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.