Home / 10,920.75-16,383.60-3,995.25

Finding the Fourth Proportional to 10,920.75, 16,383.60 and 3,995.25

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Solution

The fourth proportional to 10,920.75, 16,383.60 and 3,995.25 is: 5,993.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.75 : 16,383.60 = 3,995.25 : x
  2. Step 2: Convert to fraction form
    10,920.75/16,383.60 = 3,995.25/x
  3. Step 3: Cross multiply
    10,920.75x = 16,383.60 × 3,995.25
  4. Step 4: Simplify right side
    10,920.75x = 65,456,577.90
  5. Step 5: Solve for x
    x = 65,456,577.90/10,920.75
  6. Step 6: Final answer
    x = 5,993.78

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1.5x scale

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.