Home / 10,661.40-15,990.83-3,270.96

Finding the Fourth Proportional to 10,661.40, 15,990.83 and 3,270.96

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Solution

The fourth proportional to 10,661.40, 15,990.83 and 3,270.96 is: 4,906.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.40 : 15,990.83 = 3,270.96 : x
  2. Step 2: Convert to fraction form
    10,661.40/15,990.83 = 3,270.96/x
  3. Step 3: Cross multiply
    10,661.40x = 15,990.83 × 3,270.96
  4. Step 4: Simplify right side
    10,661.40x = 52,305,348.94
  5. Step 5: Solve for x
    x = 52,305,348.94/10,661.40
  6. Step 6: Final answer
    x = 4,906.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.