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Finding the Third Proportional to 11,019 and 14,989

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Solution

The third proportional to 11,019 and 14,989 is: 20,389.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,019 : 14,989 = 14,989 : x
  2. Step 2: Convert to fraction form
    11,019/14,989 = 14,989/x
  3. Step 3: Cross multiply
    11,019x = 14,989 × 14,989
  4. Step 4: Simplify right side
    11,019x = 224,670,121
  5. Step 5: Solve for x
    x = 224,670,121/11,019
  6. Step 6: Final answer
    x = 20,389.34

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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.