Home / 12,147.42-18,221.15-3,382.33

Finding the Fourth Proportional to 12,147.42, 18,221.15 and 3,382.33

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Solution

The fourth proportional to 12,147.42, 18,221.15 and 3,382.33 is: 5,073.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.42 : 18,221.15 = 3,382.33 : x
  2. Step 2: Convert to fraction form
    12,147.42/18,221.15 = 3,382.33/x
  3. Step 3: Cross multiply
    12,147.42x = 18,221.15 × 3,382.33
  4. Step 4: Simplify right side
    12,147.42x = 61,629,942.28
  5. Step 5: Solve for x
    x = 61,629,942.28/12,147.42
  6. Step 6: Final answer
    x = 5,073.50

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Double scale
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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.