Home / 21,389.26-29,517.22-11,960.04

Finding the Fourth Proportional to 21,389.26, 29,517.22 and 11,960.04

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Solution

The fourth proportional to 21,389.26, 29,517.22 and 11,960.04 is: 16,504.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,389.26 : 29,517.22 = 11,960.04 : x
  2. Step 2: Convert to fraction form
    21,389.26/29,517.22 = 11,960.04/x
  3. Step 3: Cross multiply
    21,389.26x = 29,517.22 × 11,960.04
  4. Step 4: Simplify right side
    21,389.26x = 353,027,131.89
  5. Step 5: Solve for x
    x = 353,027,131.89/21,389.26
  6. Step 6: Final answer
    x = 16,504.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.