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Finding the Fourth Proportional to 11,251.55, 16,863.64 and 7,965.59

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Solution

The fourth proportional to 11,251.55, 16,863.64 and 7,965.59 is: 11,938.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,251.55 : 16,863.64 = 7,965.59 : x
  2. Step 2: Convert to fraction form
    11,251.55/16,863.64 = 7,965.59/x
  3. Step 3: Cross multiply
    11,251.55x = 16,863.64 × 7,965.59
  4. Step 4: Simplify right side
    11,251.55x = 134,328,842.15
  5. Step 5: Solve for x
    x = 134,328,842.15/11,251.55
  6. Step 6: Final answer
    x = 11,938.70

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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.