Home / 21,175.26-31,735.19-8,680.65

Finding the Fourth Proportional to 21,175.26, 31,735.19 and 8,680.65

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Solution

The fourth proportional to 21,175.26, 31,735.19 and 8,680.65 is: 13,009.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.26 : 31,735.19 = 8,680.65 : x
  2. Step 2: Convert to fraction form
    21,175.26/31,735.19 = 8,680.65/x
  3. Step 3: Cross multiply
    21,175.26x = 31,735.19 × 8,680.65
  4. Step 4: Simplify right side
    21,175.26x = 275,482,033.67
  5. Step 5: Solve for x
    x = 275,482,033.67/21,175.26
  6. Step 6: Final answer
    x = 13,009.62

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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.