Home / 10,991.82-15,170.05-6,211.97

Finding the Fourth Proportional to 10,991.82, 15,170.05 and 6,211.97

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Solution

The fourth proportional to 10,991.82, 15,170.05 and 6,211.97 is: 8,573.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991.82 : 15,170.05 = 6,211.97 : x
  2. Step 2: Convert to fraction form
    10,991.82/15,170.05 = 6,211.97/x
  3. Step 3: Cross multiply
    10,991.82x = 15,170.05 × 6,211.97
  4. Step 4: Simplify right side
    10,991.82x = 94,235,895.50
  5. Step 5: Solve for x
    x = 94,235,895.50/10,991.82
  6. Step 6: Final answer
    x = 8,573.27

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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.