Home / 10,919.87-16,383.26-3,899.73

Finding the Fourth Proportional to 10,919.87, 16,383.26 and 3,899.73

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Solution

The fourth proportional to 10,919.87, 16,383.26 and 3,899.73 is: 5,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.87 : 16,383.26 = 3,899.73 : x
  2. Step 2: Convert to fraction form
    10,919.87/16,383.26 = 3,899.73/x
  3. Step 3: Cross multiply
    10,919.87x = 16,383.26 × 3,899.73
  4. Step 4: Simplify right side
    10,919.87x = 63,890,271.02
  5. Step 5: Solve for x
    x = 63,890,271.02/10,919.87
  6. Step 6: Final answer
    x = 5,850.83

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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.