Home / 12,419.82-18,629.72-3,185.82

Finding the Fourth Proportional to 12,419.82, 18,629.72 and 3,185.82

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Solution

The fourth proportional to 12,419.82, 18,629.72 and 3,185.82 is: 4,778.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.82 : 18,629.72 = 3,185.82 : x
  2. Step 2: Convert to fraction form
    12,419.82/18,629.72 = 3,185.82/x
  3. Step 3: Cross multiply
    12,419.82x = 18,629.72 × 3,185.82
  4. Step 4: Simplify right side
    12,419.82x = 59,350,934.57
  5. Step 5: Solve for x
    x = 59,350,934.57/12,419.82
  6. Step 6: Final answer
    x = 4,778.73

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Similar ratio
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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.