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Finding the Third Proportional to 15,792 and 21,696

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Solution

The third proportional to 15,792 and 21,696 is: 29,807.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,792 : 21,696 = 21,696 : x
  2. Step 2: Convert to fraction form
    15,792/21,696 = 21,696/x
  3. Step 3: Cross multiply
    15,792x = 21,696 × 21,696
  4. Step 4: Simplify right side
    15,792x = 470,716,416
  5. Step 5: Solve for x
    x = 470,716,416/15,792
  6. Step 6: Final answer
    x = 29,807.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.