Home / 21,327.30-31,944.78-15,471

Finding the Fourth Proportional to 21,327.30, 31,944.78 and 15,471

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Solution

The fourth proportional to 21,327.30, 31,944.78 and 15,471 is: 23,173.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.30 : 31,944.78 = 15,471 : x
  2. Step 2: Convert to fraction form
    21,327.30/31,944.78 = 15,471/x
  3. Step 3: Cross multiply
    21,327.30x = 31,944.78 × 15,471
  4. Step 4: Simplify right side
    21,327.30x = 494,217,691.38
  5. Step 5: Solve for x
    x = 494,217,691.38/21,327.30
  6. Step 6: Final answer
    x = 23,173.01

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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.