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Finding the Third Proportional to 18,837.56 and 39,229.31

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Solution

The third proportional to 18,837.56 and 39,229.31 is: 81,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,837.56 : 39,229.31 = 39,229.31 : x
  2. Step 2: Convert to fraction form
    18,837.56/39,229.31 = 39,229.31/x
  3. Step 3: Cross multiply
    18,837.56x = 39,229.31 × 39,229.31
  4. Step 4: Simplify right side
    18,837.56x = 1,538,938,959.22
  5. Step 5: Solve for x
    x = 1,538,938,959.22/18,837.56
  6. Step 6: Final answer
    x = 81,695.23

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.