Home / 21,122.52-31,724.82-15,553.88

Finding the Fourth Proportional to 21,122.52, 31,724.82 and 15,553.88

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Solution

The fourth proportional to 21,122.52, 31,724.82 and 15,553.88 is: 23,361.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,122.52 : 31,724.82 = 15,553.88 : x
  2. Step 2: Convert to fraction form
    21,122.52/31,724.82 = 15,553.88/x
  3. Step 3: Cross multiply
    21,122.52x = 31,724.82 × 15,553.88
  4. Step 4: Simplify right side
    21,122.52x = 493,444,043.30
  5. Step 5: Solve for x
    x = 493,444,043.30/21,122.52
  6. Step 6: Final answer
    x = 23,361.04

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1.5x scale

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.