Home / 12,142.41-18,213.61-3,377.55

Finding the Fourth Proportional to 12,142.41, 18,213.61 and 3,377.55

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Solution

The fourth proportional to 12,142.41, 18,213.61 and 3,377.55 is: 5,066.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,142.41 : 18,213.61 = 3,377.55 : x
  2. Step 2: Convert to fraction form
    12,142.41/18,213.61 = 3,377.55/x
  3. Step 3: Cross multiply
    12,142.41x = 18,213.61 × 3,377.55
  4. Step 4: Simplify right side
    12,142.41x = 61,517,342.19
  5. Step 5: Solve for x
    x = 61,517,342.19/12,142.41
  6. Step 6: Final answer
    x = 5,066.32

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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.