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Finding the Fourth Proportional to 11,689.66, 17,531.88 and 3,367.90

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Solution

The fourth proportional to 11,689.66, 17,531.88 and 3,367.90 is: 5,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,689.66 : 17,531.88 = 3,367.90 : x
  2. Step 2: Convert to fraction form
    11,689.66/17,531.88 = 3,367.90/x
  3. Step 3: Cross multiply
    11,689.66x = 17,531.88 × 3,367.90
  4. Step 4: Simplify right side
    11,689.66x = 59,045,618.65
  5. Step 5: Solve for x
    x = 59,045,618.65/11,689.66
  6. Step 6: Final answer
    x = 5,051.10

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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.