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Finding the Fourth Proportional to 18,481.56, 25,504.56 and 9,983.68

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Solution

The fourth proportional to 18,481.56, 25,504.56 and 9,983.68 is: 13,777.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,481.56 : 25,504.56 = 9,983.68 : x
  2. Step 2: Convert to fraction form
    18,481.56/25,504.56 = 9,983.68/x
  3. Step 3: Cross multiply
    18,481.56x = 25,504.56 × 9,983.68
  4. Step 4: Simplify right side
    18,481.56x = 254,629,365.58
  5. Step 5: Solve for x
    x = 254,629,365.58/18,481.56
  6. Step 6: Final answer
    x = 13,777.49

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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.