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Finding the Fourth Proportional to 15,163.88, 20,926.15 and 8,876.25

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Solution

The fourth proportional to 15,163.88, 20,926.15 and 8,876.25 is: 12,249.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.88 : 20,926.15 = 8,876.25 : x
  2. Step 2: Convert to fraction form
    15,163.88/20,926.15 = 8,876.25/x
  3. Step 3: Cross multiply
    15,163.88x = 20,926.15 × 8,876.25
  4. Step 4: Simplify right side
    15,163.88x = 185,745,716.75
  5. Step 5: Solve for x
    x = 185,745,716.75/15,163.88
  6. Step 6: Final answer
    x = 12,249.23

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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.