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Finding the Third Proportional to 21,808 and 29,184

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Solution

The third proportional to 21,808 and 29,184 is: 39,054.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808 : 29,184 = 29,184 : x
  2. Step 2: Convert to fraction form
    21,808/29,184 = 29,184/x
  3. Step 3: Cross multiply
    21,808x = 29,184 × 29,184
  4. Step 4: Simplify right side
    21,808x = 851,705,856
  5. Step 5: Solve for x
    x = 851,705,856/21,808
  6. Step 6: Final answer
    x = 39,054.74

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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.