Home / 12,721.92-19,085.32-3,956.52

Finding the Fourth Proportional to 12,721.92, 19,085.32 and 3,956.52

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Solution

The fourth proportional to 12,721.92, 19,085.32 and 3,956.52 is: 5,935.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.92 : 19,085.32 = 3,956.52 : x
  2. Step 2: Convert to fraction form
    12,721.92/19,085.32 = 3,956.52/x
  3. Step 3: Cross multiply
    12,721.92x = 19,085.32 × 3,956.52
  4. Step 4: Simplify right side
    12,721.92x = 75,511,450.29
  5. Step 5: Solve for x
    x = 75,511,450.29/12,721.92
  6. Step 6: Final answer
    x = 5,935.54

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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.