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Finding the Third Proportional to 20,980 and 29,904

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Solution

The third proportional to 20,980 and 29,904 is: 42,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980 : 29,904 = 29,904 : x
  2. Step 2: Convert to fraction form
    20,980/29,904 = 29,904/x
  3. Step 3: Cross multiply
    20,980x = 29,904 × 29,904
  4. Step 4: Simplify right side
    20,980x = 894,249,216
  5. Step 5: Solve for x
    x = 894,249,216/20,980
  6. Step 6: Final answer
    x = 42,623.89

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.