Home / 21,286.26-31,929.41-8,792.56

Finding the Fourth Proportional to 21,286.26, 31,929.41 and 8,792.56

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Solution

The fourth proportional to 21,286.26, 31,929.41 and 8,792.56 is: 13,188.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.26 : 31,929.41 = 8,792.56 : x
  2. Step 2: Convert to fraction form
    21,286.26/31,929.41 = 8,792.56/x
  3. Step 3: Cross multiply
    21,286.26x = 31,929.41 × 8,792.56
  4. Step 4: Simplify right side
    21,286.26x = 280,741,253.19
  5. Step 5: Solve for x
    x = 280,741,253.19/21,286.26
  6. Step 6: Final answer
    x = 13,188.85

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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.