Home / 11,891.25-17,836.87-3,126.15

Finding the Fourth Proportional to 11,891.25, 17,836.87 and 3,126.15

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Solution

The fourth proportional to 11,891.25, 17,836.87 and 3,126.15 is: 4,689.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.25 : 17,836.87 = 3,126.15 : x
  2. Step 2: Convert to fraction form
    11,891.25/17,836.87 = 3,126.15/x
  3. Step 3: Cross multiply
    11,891.25x = 17,836.87 × 3,126.15
  4. Step 4: Simplify right side
    11,891.25x = 55,760,634.15
  5. Step 5: Solve for x
    x = 55,760,634.15/11,891.25
  6. Step 6: Final answer
    x = 4,689.22

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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.