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Finding the Fourth Proportional to 12,109.44, 18,163.54 and 11,469.54

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Solution

The fourth proportional to 12,109.44, 18,163.54 and 11,469.54 is: 17,203.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109.44 : 18,163.54 = 11,469.54 : x
  2. Step 2: Convert to fraction form
    12,109.44/18,163.54 = 11,469.54/x
  3. Step 3: Cross multiply
    12,109.44x = 18,163.54 × 11,469.54
  4. Step 4: Simplify right side
    12,109.44x = 208,327,448.57
  5. Step 5: Solve for x
    x = 208,327,448.57/12,109.44
  6. Step 6: Final answer
    x = 17,203.72

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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.