Home / 21,226.75-31,842.15-8,747.62

Finding the Fourth Proportional to 21,226.75, 31,842.15 and 8,747.62

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Solution

The fourth proportional to 21,226.75, 31,842.15 and 8,747.62 is: 13,122.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,226.75 : 31,842.15 = 8,747.62 : x
  2. Step 2: Convert to fraction form
    21,226.75/31,842.15 = 8,747.62/x
  3. Step 3: Cross multiply
    21,226.75x = 31,842.15 × 8,747.62
  4. Step 4: Simplify right side
    21,226.75x = 278,543,028.18
  5. Step 5: Solve for x
    x = 278,543,028.18/21,226.75
  6. Step 6: Final answer
    x = 13,122.26

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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.