Home / 11,891.12-17,836.76-3,126.92

Finding the Fourth Proportional to 11,891.12, 17,836.76 and 3,126.92

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Solution

The fourth proportional to 11,891.12, 17,836.76 and 3,126.92 is: 4,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.12 : 17,836.76 = 3,126.92 : x
  2. Step 2: Convert to fraction form
    11,891.12/17,836.76 = 3,126.92/x
  3. Step 3: Cross multiply
    11,891.12x = 17,836.76 × 3,126.92
  4. Step 4: Simplify right side
    11,891.12x = 55,774,121.58
  5. Step 5: Solve for x
    x = 55,774,121.58/11,891.12
  6. Step 6: Final answer
    x = 4,690.40

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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.