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Finding the Third Proportional to 18,556.31 and 38,935.13

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Solution

The third proportional to 18,556.31 and 38,935.13 is: 81,694.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,556.31 : 38,935.13 = 38,935.13 : x
  2. Step 2: Convert to fraction form
    18,556.31/38,935.13 = 38,935.13/x
  3. Step 3: Cross multiply
    18,556.31x = 38,935.13 × 38,935.13
  4. Step 4: Simplify right side
    18,556.31x = 1,515,943,958.77
  5. Step 5: Solve for x
    x = 1,515,943,958.77/18,556.31
  6. Step 6: Final answer
    x = 81,694.25

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.