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Finding the Third Proportional to 21,688 and 29,022

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Solution

The third proportional to 21,688 and 29,022 is: 38,836.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,688 : 29,022 = 29,022 : x
  2. Step 2: Convert to fraction form
    21,688/29,022 = 29,022/x
  3. Step 3: Cross multiply
    21,688x = 29,022 × 29,022
  4. Step 4: Simplify right side
    21,688x = 842,276,484
  5. Step 5: Solve for x
    x = 842,276,484/21,688
  6. Step 6: Final answer
    x = 38,836.06

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.