Home / 11,391.75-17,080.50-3,996.90

Finding the Fourth Proportional to 11,391.75, 17,080.50 and 3,996.90

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Solution

The fourth proportional to 11,391.75, 17,080.50 and 3,996.90 is: 5,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.75 : 17,080.50 = 3,996.90 : x
  2. Step 2: Convert to fraction form
    11,391.75/17,080.50 = 3,996.90/x
  3. Step 3: Cross multiply
    11,391.75x = 17,080.50 × 3,996.90
  4. Step 4: Simplify right side
    11,391.75x = 68,269,050.45
  5. Step 5: Solve for x
    x = 68,269,050.45/11,391.75
  6. Step 6: Final answer
    x = 5,992.85

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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.