Home / 12,131.25-18,194.68-3,366.87

Finding the Fourth Proportional to 12,131.25, 18,194.68 and 3,366.87

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Solution

The fourth proportional to 12,131.25, 18,194.68 and 3,366.87 is: 5,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.25 : 18,194.68 = 3,366.87 : x
  2. Step 2: Convert to fraction form
    12,131.25/18,194.68 = 3,366.87/x
  3. Step 3: Cross multiply
    12,131.25x = 18,194.68 × 3,366.87
  4. Step 4: Simplify right side
    12,131.25x = 61,259,122.25
  5. Step 5: Solve for x
    x = 61,259,122.25/12,131.25
  6. Step 6: Final answer
    x = 5,049.70

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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.