Home / 15,211.44-20,991.33-8,496.90

Finding the Fourth Proportional to 15,211.44, 20,991.33 and 8,496.90

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Solution

The fourth proportional to 15,211.44, 20,991.33 and 8,496.90 is: 11,725.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.44 : 20,991.33 = 8,496.90 : x
  2. Step 2: Convert to fraction form
    15,211.44/20,991.33 = 8,496.90/x
  3. Step 3: Cross multiply
    15,211.44x = 20,991.33 × 8,496.90
  4. Step 4: Simplify right side
    15,211.44x = 178,361,231.88
  5. Step 5: Solve for x
    x = 178,361,231.88/15,211.44
  6. Step 6: Final answer
    x = 11,725.47

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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.