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Finding the Third Proportional to 16,148 and 21,918

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Solution

The third proportional to 16,148 and 21,918 is: 29,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,148 : 21,918 = 21,918 : x
  2. Step 2: Convert to fraction form
    16,148/21,918 = 21,918/x
  3. Step 3: Cross multiply
    16,148x = 21,918 × 21,918
  4. Step 4: Simplify right side
    16,148x = 480,398,724
  5. Step 5: Solve for x
    x = 480,398,724/16,148
  6. Step 6: Final answer
    x = 29,749.74

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.