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Finding the Third Proportional to 19,178 and 25,911

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Solution

The third proportional to 19,178 and 25,911 is: 35,007.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178 : 25,911 = 25,911 : x
  2. Step 2: Convert to fraction form
    19,178/25,911 = 25,911/x
  3. Step 3: Cross multiply
    19,178x = 25,911 × 25,911
  4. Step 4: Simplify right side
    19,178x = 671,379,921
  5. Step 5: Solve for x
    x = 671,379,921/19,178
  6. Step 6: Final answer
    x = 35,007.82

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.