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Finding the Third Proportional to 15,936 and 18,816

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Solution

The third proportional to 15,936 and 18,816 is: 22,216.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936 : 18,816 = 18,816 : x
  2. Step 2: Convert to fraction form
    15,936/18,816 = 18,816/x
  3. Step 3: Cross multiply
    15,936x = 18,816 × 18,816
  4. Step 4: Simplify right side
    15,936x = 354,041,856
  5. Step 5: Solve for x
    x = 354,041,856/15,936
  6. Step 6: Final answer
    x = 22,216.48

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.