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Finding the Third Proportional to 12,838 and 15,646

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Solution

The third proportional to 12,838 and 15,646 is: 19,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,838 : 15,646 = 15,646 : x
  2. Step 2: Convert to fraction form
    12,838/15,646 = 15,646/x
  3. Step 3: Cross multiply
    12,838x = 15,646 × 15,646
  4. Step 4: Simplify right side
    12,838x = 244,797,316
  5. Step 5: Solve for x
    x = 244,797,316/12,838
  6. Step 6: Final answer
    x = 19,068.18

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.