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Finding the Fourth Proportional to 18,245.80, 25,179.21 and 9,862.30

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Solution

The fourth proportional to 18,245.80, 25,179.21 and 9,862.30 is: 13,609.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.80 : 25,179.21 = 9,862.30 : x
  2. Step 2: Convert to fraction form
    18,245.80/25,179.21 = 9,862.30/x
  3. Step 3: Cross multiply
    18,245.80x = 25,179.21 × 9,862.30
  4. Step 4: Simplify right side
    18,245.80x = 248,324,873.47
  5. Step 5: Solve for x
    x = 248,324,873.47/18,245.80
  6. Step 6: Final answer
    x = 13,609.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.