Home / 20,949.09-31,418.78-6,154.04

Finding the Fourth Proportional to 20,949.09, 31,418.78 and 6,154.04

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Solution

The fourth proportional to 20,949.09, 31,418.78 and 6,154.04 is: 9,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.09 : 31,418.78 = 6,154.04 : x
  2. Step 2: Convert to fraction form
    20,949.09/31,418.78 = 6,154.04/x
  3. Step 3: Cross multiply
    20,949.09x = 31,418.78 × 6,154.04
  4. Step 4: Simplify right side
    20,949.09x = 193,352,241.01
  5. Step 5: Solve for x
    x = 193,352,241.01/20,949.09
  6. Step 6: Final answer
    x = 9,229.62

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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.