Home / 21,825.20-32,694.69-17,121.78

Finding the Fourth Proportional to 21,825.20, 32,694.69 and 17,121.78

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Solution

The fourth proportional to 21,825.20, 32,694.69 and 17,121.78 is: 25,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,825.20 : 32,694.69 = 17,121.78 : x
  2. Step 2: Convert to fraction form
    21,825.20/32,694.69 = 17,121.78/x
  3. Step 3: Cross multiply
    21,825.20x = 32,694.69 × 17,121.78
  4. Step 4: Simplify right side
    21,825.20x = 559,791,257.24
  5. Step 5: Solve for x
    x = 559,791,257.24/21,825.20
  6. Step 6: Final answer
    x = 25,648.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.