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Finding the Third Proportional to 11,910 and 18,842

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Solution

The third proportional to 11,910 and 18,842 is: 29,808.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910 : 18,842 = 18,842 : x
  2. Step 2: Convert to fraction form
    11,910/18,842 = 18,842/x
  3. Step 3: Cross multiply
    11,910x = 18,842 × 18,842
  4. Step 4: Simplify right side
    11,910x = 355,020,964
  5. Step 5: Solve for x
    x = 355,020,964/11,910
  6. Step 6: Final answer
    x = 29,808.65

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.