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Finding the Third Proportional to 11,209 and 14,977

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Solution

The third proportional to 11,209 and 14,977 is: 20,011.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209 : 14,977 = 14,977 : x
  2. Step 2: Convert to fraction form
    11,209/14,977 = 14,977/x
  3. Step 3: Cross multiply
    11,209x = 14,977 × 14,977
  4. Step 4: Simplify right side
    11,209x = 224,310,529
  5. Step 5: Solve for x
    x = 224,310,529/11,209
  6. Step 6: Final answer
    x = 20,011.65

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.