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Finding the Fourth Proportional to 18,123.20, 27,163.20 and 9,353.60

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Solution

The fourth proportional to 18,123.20, 27,163.20 and 9,353.60 is: 14,019.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.20 : 27,163.20 = 9,353.60 : x
  2. Step 2: Convert to fraction form
    18,123.20/27,163.20 = 9,353.60/x
  3. Step 3: Cross multiply
    18,123.20x = 27,163.20 × 9,353.60
  4. Step 4: Simplify right side
    18,123.20x = 254,073,707.52
  5. Step 5: Solve for x
    x = 254,073,707.52/18,123.20
  6. Step 6: Final answer
    x = 14,019.25

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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.