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Finding the Third Proportional to 10,991 and 14,974

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Solution

The third proportional to 10,991 and 14,974 is: 20,400.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,991 : 14,974 = 14,974 : x
  2. Step 2: Convert to fraction form
    10,991/14,974 = 14,974/x
  3. Step 3: Cross multiply
    10,991x = 14,974 × 14,974
  4. Step 4: Simplify right side
    10,991x = 224,220,676
  5. Step 5: Solve for x
    x = 224,220,676/10,991
  6. Step 6: Final answer
    x = 20,400.39

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.