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Finding the Third Proportional to 18,024 and 19,644

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Solution

The third proportional to 18,024 and 19,644 is: 21,409.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,024 : 19,644 = 19,644 : x
  2. Step 2: Convert to fraction form
    18,024/19,644 = 19,644/x
  3. Step 3: Cross multiply
    18,024x = 19,644 × 19,644
  4. Step 4: Simplify right side
    18,024x = 385,886,736
  5. Step 5: Solve for x
    x = 385,886,736/18,024
  6. Step 6: Final answer
    x = 21,409.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.