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Finding the Third Proportional to 8,672 and 19,285

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Solution

The third proportional to 8,672 and 19,285 is: 42,886.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672 : 19,285 = 19,285 : x
  2. Step 2: Convert to fraction form
    8,672/19,285 = 19,285/x
  3. Step 3: Cross multiply
    8,672x = 19,285 × 19,285
  4. Step 4: Simplify right side
    8,672x = 371,911,225
  5. Step 5: Solve for x
    x = 371,911,225/8,672
  6. Step 6: Final answer
    x = 42,886.44

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.