Home / 20,675.10-31,003.05-8,982.30

Finding the Fourth Proportional to 20,675.10, 31,003.05 and 8,982.30

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Solution

The fourth proportional to 20,675.10, 31,003.05 and 8,982.30 is: 13,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.10 : 31,003.05 = 8,982.30 : x
  2. Step 2: Convert to fraction form
    20,675.10/31,003.05 = 8,982.30/x
  3. Step 3: Cross multiply
    20,675.10x = 31,003.05 × 8,982.30
  4. Step 4: Simplify right side
    20,675.10x = 278,478,696.02
  5. Step 5: Solve for x
    x = 278,478,696.02/20,675.10
  6. Step 6: Final answer
    x = 13,469.28

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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.