Home / 21,376.20-29,517.28-16,061.78

Finding the Fourth Proportional to 21,376.20, 29,517.28 and 16,061.78

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Solution

The fourth proportional to 21,376.20, 29,517.28 and 16,061.78 is: 22,178.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.20 : 29,517.28 = 16,061.78 : x
  2. Step 2: Convert to fraction form
    21,376.20/29,517.28 = 16,061.78/x
  3. Step 3: Cross multiply
    21,376.20x = 29,517.28 × 16,061.78
  4. Step 4: Simplify right side
    21,376.20x = 474,100,057.56
  5. Step 5: Solve for x
    x = 474,100,057.56/21,376.20
  6. Step 6: Final answer
    x = 22,178.87

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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.