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Finding the Third Proportional to 18,658 and 28,258

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Solution

The third proportional to 18,658 and 28,258 is: 42,797.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658 : 28,258 = 28,258 : x
  2. Step 2: Convert to fraction form
    18,658/28,258 = 28,258/x
  3. Step 3: Cross multiply
    18,658x = 28,258 × 28,258
  4. Step 4: Simplify right side
    18,658x = 798,514,564
  5. Step 5: Solve for x
    x = 798,514,564/18,658
  6. Step 6: Final answer
    x = 42,797.44

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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.