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Finding the Fourth Proportional to 12,163.08, 18,209.08 and 10,995.78

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Solution

The fourth proportional to 12,163.08, 18,209.08 and 10,995.78 is: 16,461.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.08 : 18,209.08 = 10,995.78 : x
  2. Step 2: Convert to fraction form
    12,163.08/18,209.08 = 10,995.78/x
  3. Step 3: Cross multiply
    12,163.08x = 18,209.08 × 10,995.78
  4. Step 4: Simplify right side
    12,163.08x = 200,223,037.68
  5. Step 5: Solve for x
    x = 200,223,037.68/12,163.08
  6. Step 6: Final answer
    x = 16,461.54

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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.