Home / 11,982.86-17,982.27-4,191.66

Finding the Fourth Proportional to 11,982.86, 17,982.27 and 4,191.66

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Solution

The fourth proportional to 11,982.86, 17,982.27 and 4,191.66 is: 6,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.86 : 17,982.27 = 4,191.66 : x
  2. Step 2: Convert to fraction form
    11,982.86/17,982.27 = 4,191.66/x
  3. Step 3: Cross multiply
    11,982.86x = 17,982.27 × 4,191.66
  4. Step 4: Simplify right side
    11,982.86x = 75,375,561.87
  5. Step 5: Solve for x
    x = 75,375,561.87/11,982.86
  6. Step 6: Final answer
    x = 6,290.28

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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.