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Finding the Third Proportional to 17,312 and 18,752

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Solution

The third proportional to 17,312 and 18,752 is: 20,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,312 : 18,752 = 18,752 : x
  2. Step 2: Convert to fraction form
    17,312/18,752 = 18,752/x
  3. Step 3: Cross multiply
    17,312x = 18,752 × 18,752
  4. Step 4: Simplify right side
    17,312x = 351,637,504
  5. Step 5: Solve for x
    x = 351,637,504/17,312
  6. Step 6: Final answer
    x = 20,311.78

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.