Home / 13,479.62-20,219.42-4,119.66

Finding the Fourth Proportional to 13,479.62, 20,219.42 and 4,119.66

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Solution

The fourth proportional to 13,479.62, 20,219.42 and 4,119.66 is: 6,179.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.62 : 20,219.42 = 4,119.66 : x
  2. Step 2: Convert to fraction form
    13,479.62/20,219.42 = 4,119.66/x
  3. Step 3: Cross multiply
    13,479.62x = 20,219.42 × 4,119.66
  4. Step 4: Simplify right side
    13,479.62x = 83,297,146.10
  5. Step 5: Solve for x
    x = 83,297,146.10/13,479.62
  6. Step 6: Final answer
    x = 6,179.49

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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.