Home / 20,512.55-30,770.48-5,721.62

Finding the Fourth Proportional to 20,512.55, 30,770.48 and 5,721.62

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Solution

The fourth proportional to 20,512.55, 30,770.48 and 5,721.62 is: 8,582.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.55 : 30,770.48 = 5,721.62 : x
  2. Step 2: Convert to fraction form
    20,512.55/30,770.48 = 5,721.62/x
  3. Step 3: Cross multiply
    20,512.55x = 30,770.48 × 5,721.62
  4. Step 4: Simplify right side
    20,512.55x = 176,056,854.23
  5. Step 5: Solve for x
    x = 176,056,854.23/20,512.55
  6. Step 6: Final answer
    x = 8,582.88

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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.