Home / 12,106.20-18,161.38-3,786.04

Finding the Fourth Proportional to 12,106.20, 18,161.38 and 3,786.04

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Solution

The fourth proportional to 12,106.20, 18,161.38 and 3,786.04 is: 5,679.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.20 : 18,161.38 = 3,786.04 : x
  2. Step 2: Convert to fraction form
    12,106.20/18,161.38 = 3,786.04/x
  3. Step 3: Cross multiply
    12,106.20x = 18,161.38 × 3,786.04
  4. Step 4: Simplify right side
    12,106.20x = 68,759,711.14
  5. Step 5: Solve for x
    x = 68,759,711.14/12,106.20
  6. Step 6: Final answer
    x = 5,679.71

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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.