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Finding the Third Proportional to 18,886 and 27,778

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Solution

The third proportional to 18,886 and 27,778 is: 40,856.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886 : 27,778 = 27,778 : x
  2. Step 2: Convert to fraction form
    18,886/27,778 = 27,778/x
  3. Step 3: Cross multiply
    18,886x = 27,778 × 27,778
  4. Step 4: Simplify right side
    18,886x = 771,617,284
  5. Step 5: Solve for x
    x = 771,617,284/18,886
  6. Step 6: Final answer
    x = 40,856.58

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.