Home / 42,198.20-63,321.60-15,921.80

Finding the Fourth Proportional to 42,198.20, 63,321.60 and 15,921.80

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Solution

The fourth proportional to 42,198.20, 63,321.60 and 15,921.80 is: 23,891.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,198.20 : 63,321.60 = 15,921.80 : x
  2. Step 2: Convert to fraction form
    42,198.20/63,321.60 = 15,921.80/x
  3. Step 3: Cross multiply
    42,198.20x = 63,321.60 × 15,921.80
  4. Step 4: Simplify right side
    42,198.20x = 1,008,193,850.88
  5. Step 5: Solve for x
    x = 1,008,193,850.88/42,198.20
  6. Step 6: Final answer
    x = 23,891.87

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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.