Home / 15,195.92-20,970.24-8,481.44

Finding the Fourth Proportional to 15,195.92, 20,970.24 and 8,481.44

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Solution

The fourth proportional to 15,195.92, 20,970.24 and 8,481.44 is: 11,704.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,195.92 : 20,970.24 = 8,481.44 : x
  2. Step 2: Convert to fraction form
    15,195.92/20,970.24 = 8,481.44/x
  3. Step 3: Cross multiply
    15,195.92x = 20,970.24 × 8,481.44
  4. Step 4: Simplify right side
    15,195.92x = 177,857,832.35
  5. Step 5: Solve for x
    x = 177,857,832.35/15,195.92
  6. Step 6: Final answer
    x = 11,704.31

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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.