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Finding the Fourth Proportional to 12,163.26, 18,248.99 and 12,081.25

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Solution

The fourth proportional to 12,163.26, 18,248.99 and 12,081.25 is: 18,125.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.26 : 18,248.99 = 12,081.25 : x
  2. Step 2: Convert to fraction form
    12,163.26/18,248.99 = 12,081.25/x
  3. Step 3: Cross multiply
    12,163.26x = 18,248.99 × 12,081.25
  4. Step 4: Simplify right side
    12,163.26x = 220,470,674.78
  5. Step 5: Solve for x
    x = 220,470,674.78/12,163.26
  6. Step 6: Final answer
    x = 18,125.95

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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.