Home / 29,278.80-40,404.42-15,849.78

Finding the Fourth Proportional to 29,278.80, 40,404.42 and 15,849.78

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Solution

The fourth proportional to 29,278.80, 40,404.42 and 15,849.78 is: 21,872.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,278.80 : 40,404.42 = 15,849.78 : x
  2. Step 2: Convert to fraction form
    29,278.80/40,404.42 = 15,849.78/x
  3. Step 3: Cross multiply
    29,278.80x = 40,404.42 × 15,849.78
  4. Step 4: Simplify right side
    29,278.80x = 640,401,168.03
  5. Step 5: Solve for x
    x = 640,401,168.03/29,278.80
  6. Step 6: Final answer
    x = 21,872.52

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1.5x scale

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.