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Finding the Fourth Proportional to 18,251.20, 27,383.20 and 6,564.80

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Solution

The fourth proportional to 18,251.20, 27,383.20 and 6,564.80 is: 9,849.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,251.20 : 27,383.20 = 6,564.80 : x
  2. Step 2: Convert to fraction form
    18,251.20/27,383.20 = 6,564.80/x
  3. Step 3: Cross multiply
    18,251.20x = 27,383.20 × 6,564.80
  4. Step 4: Simplify right side
    18,251.20x = 179,765,231.36
  5. Step 5: Solve for x
    x = 179,765,231.36/18,251.20
  6. Step 6: Final answer
    x = 9,849.50

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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.