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Finding the Third Proportional to 12,490 and 18,246

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Solution

The third proportional to 12,490 and 18,246 is: 26,654.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490 : 18,246 = 18,246 : x
  2. Step 2: Convert to fraction form
    12,490/18,246 = 18,246/x
  3. Step 3: Cross multiply
    12,490x = 18,246 × 18,246
  4. Step 4: Simplify right side
    12,490x = 332,916,516
  5. Step 5: Solve for x
    x = 332,916,516/12,490
  6. Step 6: Final answer
    x = 26,654.64

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.