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Finding the Third Proportional to 20,246 and 30,639

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Solution

The third proportional to 20,246 and 30,639 is: 46,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246 : 30,639 = 30,639 : x
  2. Step 2: Convert to fraction form
    20,246/30,639 = 30,639/x
  3. Step 3: Cross multiply
    20,246x = 30,639 × 30,639
  4. Step 4: Simplify right side
    20,246x = 938,748,321
  5. Step 5: Solve for x
    x = 938,748,321/20,246
  6. Step 6: Final answer
    x = 46,367.10

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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.