Home / 12,481.35-18,716.88-5,080.80

Finding the Fourth Proportional to 12,481.35, 18,716.88 and 5,080.80

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Solution

The fourth proportional to 12,481.35, 18,716.88 and 5,080.80 is: 7,619.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.35 : 18,716.88 = 5,080.80 : x
  2. Step 2: Convert to fraction form
    12,481.35/18,716.88 = 5,080.80/x
  3. Step 3: Cross multiply
    12,481.35x = 18,716.88 × 5,080.80
  4. Step 4: Simplify right side
    12,481.35x = 95,096,723.90
  5. Step 5: Solve for x
    x = 95,096,723.90/12,481.35
  6. Step 6: Final answer
    x = 7,619.11

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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.