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Finding the Third Proportional to 18,085 and 27,815

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Solution

The third proportional to 18,085 and 27,815 is: 42,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085 : 27,815 = 27,815 : x
  2. Step 2: Convert to fraction form
    18,085/27,815 = 27,815/x
  3. Step 3: Cross multiply
    18,085x = 27,815 × 27,815
  4. Step 4: Simplify right side
    18,085x = 773,674,225
  5. Step 5: Solve for x
    x = 773,674,225/18,085
  6. Step 6: Final answer
    x = 42,779.89

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.