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Finding the Third Proportional to 12,726 and 18,709

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Solution

The third proportional to 12,726 and 18,709 is: 27,504.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,726 : 18,709 = 18,709 : x
  2. Step 2: Convert to fraction form
    12,726/18,709 = 18,709/x
  3. Step 3: Cross multiply
    12,726x = 18,709 × 18,709
  4. Step 4: Simplify right side
    12,726x = 350,026,681
  5. Step 5: Solve for x
    x = 350,026,681/12,726
  6. Step 6: Final answer
    x = 27,504.85

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.