Home / 21,380.20-29,504-15,016.04

Finding the Fourth Proportional to 21,380.20, 29,504 and 15,016.04

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Solution

The fourth proportional to 21,380.20, 29,504 and 15,016.04 is: 20,721.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.20 : 29,504 = 15,016.04 : x
  2. Step 2: Convert to fraction form
    21,380.20/29,504 = 15,016.04/x
  3. Step 3: Cross multiply
    21,380.20x = 29,504 × 15,016.04
  4. Step 4: Simplify right side
    21,380.20x = 443,033,244.16
  5. Step 5: Solve for x
    x = 443,033,244.16/21,380.20
  6. Step 6: Final answer
    x = 20,721.66

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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.