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Finding the Fourth Proportional to 18,220.40, 27,268.82 and 11,204.82

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Solution

The fourth proportional to 18,220.40, 27,268.82 and 11,204.82 is: 16,769.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.40 : 27,268.82 = 11,204.82 : x
  2. Step 2: Convert to fraction form
    18,220.40/27,268.82 = 11,204.82/x
  3. Step 3: Cross multiply
    18,220.40x = 27,268.82 × 11,204.82
  4. Step 4: Simplify right side
    18,220.40x = 305,542,163.69
  5. Step 5: Solve for x
    x = 305,542,163.69/18,220.40
  6. Step 6: Final answer
    x = 16,769.24

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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.