Home / 15,195.38-20,971.05-8,481.62

Finding the Fourth Proportional to 15,195.38, 20,971.05 and 8,481.62

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Solution

The fourth proportional to 15,195.38, 20,971.05 and 8,481.62 is: 11,705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.38 : 20,971.05 = 8,481.62 : x
  2. Step 2: Convert to fraction form
    15,195.38/20,971.05 = 8,481.62/x
  3. Step 3: Cross multiply
    15,195.38x = 20,971.05 × 8,481.62
  4. Step 4: Simplify right side
    15,195.38x = 177,868,477.10
  5. Step 5: Solve for x
    x = 177,868,477.10/15,195.38
  6. Step 6: Final answer
    x = 11,705.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.