Home / 12,538.24-18,805.20-3,770.80

Finding the Fourth Proportional to 12,538.24, 18,805.20 and 3,770.80

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Solution

The fourth proportional to 12,538.24, 18,805.20 and 3,770.80 is: 5,655.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.24 : 18,805.20 = 3,770.80 : x
  2. Step 2: Convert to fraction form
    12,538.24/18,805.20 = 3,770.80/x
  3. Step 3: Cross multiply
    12,538.24x = 18,805.20 × 3,770.80
  4. Step 4: Simplify right side
    12,538.24x = 70,910,648.16
  5. Step 5: Solve for x
    x = 70,910,648.16/12,538.24
  6. Step 6: Final answer
    x = 5,655.55

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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.