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Finding the Fourth Proportional to 18,163.20, 27,228.60 and 10,759.80

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Solution

The fourth proportional to 18,163.20, 27,228.60 and 10,759.80 is: 16,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.20 : 27,228.60 = 10,759.80 : x
  2. Step 2: Convert to fraction form
    18,163.20/27,228.60 = 10,759.80/x
  3. Step 3: Cross multiply
    18,163.20x = 27,228.60 × 10,759.80
  4. Step 4: Simplify right side
    18,163.20x = 292,974,290.28
  5. Step 5: Solve for x
    x = 292,974,290.28/18,163.20
  6. Step 6: Final answer
    x = 16,130.10

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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.