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Finding the Third Proportional to 17,400 and 19,176

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Solution

The third proportional to 17,400 and 19,176 is: 21,133.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,400 : 19,176 = 19,176 : x
  2. Step 2: Convert to fraction form
    17,400/19,176 = 19,176/x
  3. Step 3: Cross multiply
    17,400x = 19,176 × 19,176
  4. Step 4: Simplify right side
    17,400x = 367,718,976
  5. Step 5: Solve for x
    x = 367,718,976/17,400
  6. Step 6: Final answer
    x = 21,133.27

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.