Home / 21,517.88-29,689.41-12,560.24

Finding the Fourth Proportional to 21,517.88, 29,689.41 and 12,560.24

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Solution

The fourth proportional to 21,517.88, 29,689.41 and 12,560.24 is: 17,330.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,517.88 : 29,689.41 = 12,560.24 : x
  2. Step 2: Convert to fraction form
    21,517.88/29,689.41 = 12,560.24/x
  3. Step 3: Cross multiply
    21,517.88x = 29,689.41 × 12,560.24
  4. Step 4: Simplify right side
    21,517.88x = 372,906,115.06
  5. Step 5: Solve for x
    x = 372,906,115.06/21,517.88
  6. Step 6: Final answer
    x = 17,330.06

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1.5x scale

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.