Home / 21,516.89-29,721.33-16,542.27

Finding the Fourth Proportional to 21,516.89, 29,721.33 and 16,542.27

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Solution

The fourth proportional to 21,516.89, 29,721.33 and 16,542.27 is: 22,849.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,516.89 : 29,721.33 = 16,542.27 : x
  2. Step 2: Convert to fraction form
    21,516.89/29,721.33 = 16,542.27/x
  3. Step 3: Cross multiply
    21,516.89x = 29,721.33 × 16,542.27
  4. Step 4: Simplify right side
    21,516.89x = 491,658,265.62
  5. Step 5: Solve for x
    x = 491,658,265.62/21,516.89
  6. Step 6: Final answer
    x = 22,849.88

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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.