Home / 12,721.32-19,082-3,956.24

Finding the Fourth Proportional to 12,721.32, 19,082 and 3,956.24

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Solution

The fourth proportional to 12,721.32, 19,082 and 3,956.24 is: 5,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.32 : 19,082 = 3,956.24 : x
  2. Step 2: Convert to fraction form
    12,721.32/19,082 = 3,956.24/x
  3. Step 3: Cross multiply
    12,721.32x = 19,082 × 3,956.24
  4. Step 4: Simplify right side
    12,721.32x = 75,492,971.68
  5. Step 5: Solve for x
    x = 75,492,971.68/12,721.32
  6. Step 6: Final answer
    x = 5,934.37

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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.