Home / 10,919.25-16,378.89-3,993.75

Finding the Fourth Proportional to 10,919.25, 16,378.89 and 3,993.75

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Solution

The fourth proportional to 10,919.25, 16,378.89 and 3,993.75 is: 5,990.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.25 : 16,378.89 = 3,993.75 : x
  2. Step 2: Convert to fraction form
    10,919.25/16,378.89 = 3,993.75/x
  3. Step 3: Cross multiply
    10,919.25x = 16,378.89 × 3,993.75
  4. Step 4: Simplify right side
    10,919.25x = 65,413,191.94
  5. Step 5: Solve for x
    x = 65,413,191.94/10,919.25
  6. Step 6: Final answer
    x = 5,990.63

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Double scale
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Similar ratio
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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.