Home / 28,414.80-42,517.44-20,103.12

Finding the Fourth Proportional to 28,414.80, 42,517.44 and 20,103.12

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Solution

The fourth proportional to 28,414.80, 42,517.44 and 20,103.12 is: 30,080.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.80 : 42,517.44 = 20,103.12 : x
  2. Step 2: Convert to fraction form
    28,414.80/42,517.44 = 20,103.12/x
  3. Step 3: Cross multiply
    28,414.80x = 42,517.44 × 20,103.12
  4. Step 4: Simplify right side
    28,414.80x = 854,733,198.41
  5. Step 5: Solve for x
    x = 854,733,198.41/28,414.80
  6. Step 6: Final answer
    x = 30,080.56

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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.