Home / 11,982.88-17,982.42-4,191.76

Finding the Fourth Proportional to 11,982.88, 17,982.42 and 4,191.76

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Solution

The fourth proportional to 11,982.88, 17,982.42 and 4,191.76 is: 6,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.88 : 17,982.42 = 4,191.76 : x
  2. Step 2: Convert to fraction form
    11,982.88/17,982.42 = 4,191.76/x
  3. Step 3: Cross multiply
    11,982.88x = 17,982.42 × 4,191.76
  4. Step 4: Simplify right side
    11,982.88x = 75,377,988.86
  5. Step 5: Solve for x
    x = 75,377,988.86/11,982.88
  6. Step 6: Final answer
    x = 6,290.47

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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.