Home / 21,330.30-31,949.28-15,474

Finding the Fourth Proportional to 21,330.30, 31,949.28 and 15,474

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Solution

The fourth proportional to 21,330.30, 31,949.28 and 15,474 is: 23,177.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.30 : 31,949.28 = 15,474 : x
  2. Step 2: Convert to fraction form
    21,330.30/31,949.28 = 15,474/x
  3. Step 3: Cross multiply
    21,330.30x = 31,949.28 × 15,474
  4. Step 4: Simplify right side
    21,330.30x = 494,383,158.72
  5. Step 5: Solve for x
    x = 494,383,158.72/21,330.30
  6. Step 6: Final answer
    x = 23,177.51

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Why These Related Problems?

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