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Finding the Fourth Proportional to 27,268.80, 40,864.80 and 20,193.60

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Solution

The fourth proportional to 27,268.80, 40,864.80 and 20,193.60 is: 30,261.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,268.80 : 40,864.80 = 20,193.60 : x
  2. Step 2: Convert to fraction form
    27,268.80/40,864.80 = 20,193.60/x
  3. Step 3: Cross multiply
    27,268.80x = 40,864.80 × 20,193.60
  4. Step 4: Simplify right side
    27,268.80x = 825,207,425.28
  5. Step 5: Solve for x
    x = 825,207,425.28/27,268.80
  6. Step 6: Final answer
    x = 30,261.96

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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.