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Finding the Fourth Proportional to 27,244.80, 40,828.80 and 20,169.60

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Solution

The fourth proportional to 27,244.80, 40,828.80 and 20,169.60 is: 30,225.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,244.80 : 40,828.80 = 20,169.60 : x
  2. Step 2: Convert to fraction form
    27,244.80/40,828.80 = 20,169.60/x
  3. Step 3: Cross multiply
    27,244.80x = 40,828.80 × 20,169.60
  4. Step 4: Simplify right side
    27,244.80x = 823,500,564.48
  5. Step 5: Solve for x
    x = 823,500,564.48/27,244.80
  6. Step 6: Final answer
    x = 30,225.97

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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.