Home / 12,721.50-19,082.28-3,956.41

Finding the Fourth Proportional to 12,721.50, 19,082.28 and 3,956.41

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Solution

The fourth proportional to 12,721.50, 19,082.28 and 3,956.41 is: 5,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.50 : 19,082.28 = 3,956.41 : x
  2. Step 2: Convert to fraction form
    12,721.50/19,082.28 = 3,956.41/x
  3. Step 3: Cross multiply
    12,721.50x = 19,082.28 × 3,956.41
  4. Step 4: Simplify right side
    12,721.50x = 75,497,323.41
  5. Step 5: Solve for x
    x = 75,497,323.41/12,721.50
  6. Step 6: Final answer
    x = 5,934.62

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Similar ratio
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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.