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Finding the Fourth Proportional to 27,020.20, 40,530.30 and 18,563.80

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Solution

The fourth proportional to 27,020.20, 40,530.30 and 18,563.80 is: 27,845.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,020.20 : 40,530.30 = 18,563.80 : x
  2. Step 2: Convert to fraction form
    27,020.20/40,530.30 = 18,563.80/x
  3. Step 3: Cross multiply
    27,020.20x = 40,530.30 × 18,563.80
  4. Step 4: Simplify right side
    27,020.20x = 752,396,383.14
  5. Step 5: Solve for x
    x = 752,396,383.14/27,020.20
  6. Step 6: Final answer
    x = 27,845.70

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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.