Home / 20,850.89-31,286.12-9,744.03

Finding the Fourth Proportional to 20,850.89, 31,286.12 and 9,744.03

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Solution

The fourth proportional to 20,850.89, 31,286.12 and 9,744.03 is: 14,620.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.89 : 31,286.12 = 9,744.03 : x
  2. Step 2: Convert to fraction form
    20,850.89/31,286.12 = 9,744.03/x
  3. Step 3: Cross multiply
    20,850.89x = 31,286.12 × 9,744.03
  4. Step 4: Simplify right side
    20,850.89x = 304,852,843.14
  5. Step 5: Solve for x
    x = 304,852,843.14/20,850.89
  6. Step 6: Final answer
    x = 14,620.62

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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.