Home / 15,189.43-20,961.34-8,474.66

Finding the Fourth Proportional to 15,189.43, 20,961.34 and 8,474.66

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Solution

The fourth proportional to 15,189.43, 20,961.34 and 8,474.66 is: 11,694.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.43 : 20,961.34 = 8,474.66 : x
  2. Step 2: Convert to fraction form
    15,189.43/20,961.34 = 8,474.66/x
  3. Step 3: Cross multiply
    15,189.43x = 20,961.34 × 8,474.66
  4. Step 4: Simplify right side
    15,189.43x = 177,640,229.64
  5. Step 5: Solve for x
    x = 177,640,229.64/15,189.43
  6. Step 6: Final answer
    x = 11,694.99

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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.