Home / 11,221.97-15,481.98-6,440.19

Finding the Fourth Proportional to 11,221.97, 15,481.98 and 6,440.19

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Solution

The fourth proportional to 11,221.97, 15,481.98 and 6,440.19 is: 8,884.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.97 : 15,481.98 = 6,440.19 : x
  2. Step 2: Convert to fraction form
    11,221.97/15,481.98 = 6,440.19/x
  3. Step 3: Cross multiply
    11,221.97x = 15,481.98 × 6,440.19
  4. Step 4: Simplify right side
    11,221.97x = 99,706,892.78
  5. Step 5: Solve for x
    x = 99,706,892.78/11,221.97
  6. Step 6: Final answer
    x = 8,884.97

Related Problems

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Half scale
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Double scale
Find fourth proportional to 11,222.97, 15,483.36 and 6,441.19
Similar ratio
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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.