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Finding the Third Proportional to 18,111 and 38,402.25

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Solution

The third proportional to 18,111 and 38,402.25 is: 81,427.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,111 : 38,402.25 = 38,402.25 : x
  2. Step 2: Convert to fraction form
    18,111/38,402.25 = 38,402.25/x
  3. Step 3: Cross multiply
    18,111x = 38,402.25 × 38,402.25
  4. Step 4: Simplify right side
    18,111x = 1,474,732,805.06
  5. Step 5: Solve for x
    x = 1,474,732,805.06/18,111
  6. Step 6: Final answer
    x = 81,427.46

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.