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Finding the Third Proportional to 15,820 and 18,704

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Solution

The third proportional to 15,820 and 18,704 is: 22,113.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820 : 18,704 = 18,704 : x
  2. Step 2: Convert to fraction form
    15,820/18,704 = 18,704/x
  3. Step 3: Cross multiply
    15,820x = 18,704 × 18,704
  4. Step 4: Simplify right side
    15,820x = 349,839,616
  5. Step 5: Solve for x
    x = 349,839,616/15,820
  6. Step 6: Final answer
    x = 22,113.76

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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.