Home / 18,675.20-27,982.56-8,791.04

Finding the Fourth Proportional to 18,675.20, 27,982.56 and 8,791.04

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Solution

The fourth proportional to 18,675.20, 27,982.56 and 8,791.04 is: 13,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.20 : 27,982.56 = 8,791.04 : x
  2. Step 2: Convert to fraction form
    18,675.20/27,982.56 = 8,791.04/x
  3. Step 3: Cross multiply
    18,675.20x = 27,982.56 × 8,791.04
  4. Step 4: Simplify right side
    18,675.20x = 245,995,804.26
  5. Step 5: Solve for x
    x = 245,995,804.26/18,675.20
  6. Step 6: Final answer
    x = 13,172.33

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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.