Home / 12,519.20-18,778.80-3,754.13

Finding the Fourth Proportional to 12,519.20, 18,778.80 and 3,754.13

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Solution

The fourth proportional to 12,519.20, 18,778.80 and 3,754.13 is: 5,631.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.20 : 18,778.80 = 3,754.13 : x
  2. Step 2: Convert to fraction form
    12,519.20/18,778.80 = 3,754.13/x
  3. Step 3: Cross multiply
    12,519.20x = 18,778.80 × 3,754.13
  4. Step 4: Simplify right side
    12,519.20x = 70,497,962.55
  5. Step 5: Solve for x
    x = 70,497,962.55/12,519.20
  6. Step 6: Final answer
    x = 5,631.19

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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.