Home / 12,721.62-19,084.05-3,956.61

Finding the Fourth Proportional to 12,721.62, 19,084.05 and 3,956.61

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Solution

The fourth proportional to 12,721.62, 19,084.05 and 3,956.61 is: 5,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.62 : 19,084.05 = 3,956.61 : x
  2. Step 2: Convert to fraction form
    12,721.62/19,084.05 = 3,956.61/x
  3. Step 3: Cross multiply
    12,721.62x = 19,084.05 × 3,956.61
  4. Step 4: Simplify right side
    12,721.62x = 75,508,143.07
  5. Step 5: Solve for x
    x = 75,508,143.07/12,721.62
  6. Step 6: Final answer
    x = 5,935.42

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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.