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Finding the Third Proportional to 12,290 and 18,537

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Solution

The third proportional to 12,290 and 18,537 is: 27,959.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290 : 18,537 = 18,537 : x
  2. Step 2: Convert to fraction form
    12,290/18,537 = 18,537/x
  3. Step 3: Cross multiply
    12,290x = 18,537 × 18,537
  4. Step 4: Simplify right side
    12,290x = 343,620,369
  5. Step 5: Solve for x
    x = 343,620,369/12,290
  6. Step 6: Final answer
    x = 27,959.35

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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.