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Finding the Third Proportional to 21,388 and 33,246

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Solution

The third proportional to 21,388 and 33,246 is: 51,678.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388 : 33,246 = 33,246 : x
  2. Step 2: Convert to fraction form
    21,388/33,246 = 33,246/x
  3. Step 3: Cross multiply
    21,388x = 33,246 × 33,246
  4. Step 4: Simplify right side
    21,388x = 1,105,296,516
  5. Step 5: Solve for x
    x = 1,105,296,516/21,388
  6. Step 6: Final answer
    x = 51,678.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.