Home / 11,121.97-16,689.54-4,106.88

Finding the Fourth Proportional to 11,121.97, 16,689.54 and 4,106.88

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Solution

The fourth proportional to 11,121.97, 16,689.54 and 4,106.88 is: 6,162.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.97 : 16,689.54 = 4,106.88 : x
  2. Step 2: Convert to fraction form
    11,121.97/16,689.54 = 4,106.88/x
  3. Step 3: Cross multiply
    11,121.97x = 16,689.54 × 4,106.88
  4. Step 4: Simplify right side
    11,121.97x = 68,541,938.04
  5. Step 5: Solve for x
    x = 68,541,938.04/11,121.97
  6. Step 6: Final answer
    x = 6,162.75

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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.