Home / 29,278.68-40,404.57-15,849.92

Finding the Fourth Proportional to 29,278.68, 40,404.57 and 15,849.92

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Solution

The fourth proportional to 29,278.68, 40,404.57 and 15,849.92 is: 21,872.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,278.68 : 40,404.57 = 15,849.92 : x
  2. Step 2: Convert to fraction form
    29,278.68/40,404.57 = 15,849.92/x
  3. Step 3: Cross multiply
    29,278.68x = 40,404.57 × 15,849.92
  4. Step 4: Simplify right side
    29,278.68x = 640,409,016.43
  5. Step 5: Solve for x
    x = 640,409,016.43/29,278.68
  6. Step 6: Final answer
    x = 21,872.88

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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.