Home / 15,517.96-21,414.49-8,618.88

Finding the Fourth Proportional to 15,517.96, 21,414.49 and 8,618.88

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Solution

The fourth proportional to 15,517.96, 21,414.49 and 8,618.88 is: 11,893.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.96 : 21,414.49 = 8,618.88 : x
  2. Step 2: Convert to fraction form
    15,517.96/21,414.49 = 8,618.88/x
  3. Step 3: Cross multiply
    15,517.96x = 21,414.49 × 8,618.88
  4. Step 4: Simplify right side
    15,517.96x = 184,568,919.57
  5. Step 5: Solve for x
    x = 184,568,919.57/15,517.96
  6. Step 6: Final answer
    x = 11,893.89

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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.