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Finding the Third Proportional to 18,922 and 28,646

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Solution

The third proportional to 18,922 and 28,646 is: 43,367.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922 : 28,646 = 28,646 : x
  2. Step 2: Convert to fraction form
    18,922/28,646 = 28,646/x
  3. Step 3: Cross multiply
    18,922x = 28,646 × 28,646
  4. Step 4: Simplify right side
    18,922x = 820,593,316
  5. Step 5: Solve for x
    x = 820,593,316/18,922
  6. Step 6: Final answer
    x = 43,367.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.