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Finding the Third Proportional to 18,268 and 19,516

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Solution

The third proportional to 18,268 and 19,516 is: 20,849.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268 : 19,516 = 19,516 : x
  2. Step 2: Convert to fraction form
    18,268/19,516 = 19,516/x
  3. Step 3: Cross multiply
    18,268x = 19,516 × 19,516
  4. Step 4: Simplify right side
    18,268x = 380,874,256
  5. Step 5: Solve for x
    x = 380,874,256/18,268
  6. Step 6: Final answer
    x = 20,849.26

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.