Home / 11,517.38-17,255.11-7,999.95

Finding the Fourth Proportional to 11,517.38, 17,255.11 and 7,999.95

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Solution

The fourth proportional to 11,517.38, 17,255.11 and 7,999.95 is: 11,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,517.38 : 17,255.11 = 7,999.95 : x
  2. Step 2: Convert to fraction form
    11,517.38/17,255.11 = 7,999.95/x
  3. Step 3: Cross multiply
    11,517.38x = 17,255.11 × 7,999.95
  4. Step 4: Simplify right side
    11,517.38x = 138,040,017.24
  5. Step 5: Solve for x
    x = 138,040,017.24/11,517.38
  6. Step 6: Final answer
    x = 11,985.37

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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.