Home / 20,100.20-30,151.72-5,308.96

Finding the Fourth Proportional to 20,100.20, 30,151.72 and 5,308.96

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Solution

The fourth proportional to 20,100.20, 30,151.72 and 5,308.96 is: 7,963.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.20 : 30,151.72 = 5,308.96 : x
  2. Step 2: Convert to fraction form
    20,100.20/30,151.72 = 5,308.96/x
  3. Step 3: Cross multiply
    20,100.20x = 30,151.72 × 5,308.96
  4. Step 4: Simplify right side
    20,100.20x = 160,074,275.41
  5. Step 5: Solve for x
    x = 160,074,275.41/20,100.20
  6. Step 6: Final answer
    x = 7,963.82

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Similar ratio
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1.5x scale

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.