Home / 12,113.78-18,169.20-3,229.79

Finding the Fourth Proportional to 12,113.78, 18,169.20 and 3,229.79

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Solution

The fourth proportional to 12,113.78, 18,169.20 and 3,229.79 is: 4,844.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.78 : 18,169.20 = 3,229.79 : x
  2. Step 2: Convert to fraction form
    12,113.78/18,169.20 = 3,229.79/x
  3. Step 3: Cross multiply
    12,113.78x = 18,169.20 × 3,229.79
  4. Step 4: Simplify right side
    12,113.78x = 58,682,609.62
  5. Step 5: Solve for x
    x = 58,682,609.62/12,113.78
  6. Step 6: Final answer
    x = 4,844.29

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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.