Home / 21,715.97-29,963.39-16,344.05

Finding the Fourth Proportional to 21,715.97, 29,963.39 and 16,344.05

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Solution

The fourth proportional to 21,715.97, 29,963.39 and 16,344.05 is: 22,551.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.97 : 29,963.39 = 16,344.05 : x
  2. Step 2: Convert to fraction form
    21,715.97/29,963.39 = 16,344.05/x
  3. Step 3: Cross multiply
    21,715.97x = 29,963.39 × 16,344.05
  4. Step 4: Simplify right side
    21,715.97x = 489,722,912.79
  5. Step 5: Solve for x
    x = 489,722,912.79/21,715.97
  6. Step 6: Final answer
    x = 22,551.28

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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.