Home / 12,120-18,168.66-11,037.84

Finding the Fourth Proportional to 12,120, 18,168.66 and 11,037.84

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Solution

The fourth proportional to 12,120, 18,168.66 and 11,037.84 is: 16,546.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120 : 18,168.66 = 11,037.84 : x
  2. Step 2: Convert to fraction form
    12,120/18,168.66 = 11,037.84/x
  3. Step 3: Cross multiply
    12,120x = 18,168.66 × 11,037.84
  4. Step 4: Simplify right side
    12,120x = 200,542,762.09
  5. Step 5: Solve for x
    x = 200,542,762.09/12,120
  6. Step 6: Final answer
    x = 16,546.43

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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.