Home / 12,105.26-18,161.01-3,785.54

Finding the Fourth Proportional to 12,105.26, 18,161.01 and 3,785.54

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Solution

The fourth proportional to 12,105.26, 18,161.01 and 3,785.54 is: 5,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105.26 : 18,161.01 = 3,785.54 : x
  2. Step 2: Convert to fraction form
    12,105.26/18,161.01 = 3,785.54/x
  3. Step 3: Cross multiply
    12,105.26x = 18,161.01 × 3,785.54
  4. Step 4: Simplify right side
    12,105.26x = 68,749,229.80
  5. Step 5: Solve for x
    x = 68,749,229.80/12,105.26
  6. Step 6: Final answer
    x = 5,679.29

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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.