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Finding the Fourth Proportional to 25,796.52, 38,694.78 and 20,635.20

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Solution

The fourth proportional to 25,796.52, 38,694.78 and 20,635.20 is: 30,952.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,796.52 : 38,694.78 = 20,635.20 : x
  2. Step 2: Convert to fraction form
    25,796.52/38,694.78 = 20,635.20/x
  3. Step 3: Cross multiply
    25,796.52x = 38,694.78 × 20,635.20
  4. Step 4: Simplify right side
    25,796.52x = 798,474,524.26
  5. Step 5: Solve for x
    x = 798,474,524.26/25,796.52
  6. Step 6: Final answer
    x = 30,952.80

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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.