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Finding the Third Proportional to 15,104 and 21,756

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Solution

The third proportional to 15,104 and 21,756 is: 31,337.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104 : 21,756 = 21,756 : x
  2. Step 2: Convert to fraction form
    15,104/21,756 = 21,756/x
  3. Step 3: Cross multiply
    15,104x = 21,756 × 21,756
  4. Step 4: Simplify right side
    15,104x = 473,323,536
  5. Step 5: Solve for x
    x = 473,323,536/15,104
  6. Step 6: Final answer
    x = 31,337.63

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.