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Finding the Fourth Proportional to 18,465.30, 25,481.97 and 10,081.80

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Solution

The fourth proportional to 18,465.30, 25,481.97 and 10,081.80 is: 13,912.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,465.30 : 25,481.97 = 10,081.80 : x
  2. Step 2: Convert to fraction form
    18,465.30/25,481.97 = 10,081.80/x
  3. Step 3: Cross multiply
    18,465.30x = 25,481.97 × 10,081.80
  4. Step 4: Simplify right side
    18,465.30x = 256,904,125.15
  5. Step 5: Solve for x
    x = 256,904,125.15/18,465.30
  6. Step 6: Final answer
    x = 13,912.81

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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.