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Finding the Fourth Proportional to 18,653.44, 27,982.92 and 11,627.72

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Solution

The fourth proportional to 18,653.44, 27,982.92 and 11,627.72 is: 17,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,653.44 : 27,982.92 = 11,627.72 : x
  2. Step 2: Convert to fraction form
    18,653.44/27,982.92 = 11,627.72/x
  3. Step 3: Cross multiply
    18,653.44x = 27,982.92 × 11,627.72
  4. Step 4: Simplify right side
    18,653.44x = 325,377,558.54
  5. Step 5: Solve for x
    x = 325,377,558.54/18,653.44
  6. Step 6: Final answer
    x = 17,443.30

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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.