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Finding the Third Proportional to 11,879 and 18,547

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Solution

The third proportional to 11,879 and 18,547 is: 28,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879 : 18,547 = 18,547 : x
  2. Step 2: Convert to fraction form
    11,879/18,547 = 18,547/x
  3. Step 3: Cross multiply
    11,879x = 18,547 × 18,547
  4. Step 4: Simplify right side
    11,879x = 343,991,209
  5. Step 5: Solve for x
    x = 343,991,209/11,879
  6. Step 6: Final answer
    x = 28,957.93

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.