Home / 12,517.20-18,770.64-4,195.44

Finding the Fourth Proportional to 12,517.20, 18,770.64 and 4,195.44

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Solution

The fourth proportional to 12,517.20, 18,770.64 and 4,195.44 is: 6,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,517.20 : 18,770.64 = 4,195.44 : x
  2. Step 2: Convert to fraction form
    12,517.20/18,770.64 = 4,195.44/x
  3. Step 3: Cross multiply
    12,517.20x = 18,770.64 × 4,195.44
  4. Step 4: Simplify right side
    12,517.20x = 78,751,093.88
  5. Step 5: Solve for x
    x = 78,751,093.88/12,517.20
  6. Step 6: Final answer
    x = 6,291.43

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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.