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Finding the Third Proportional to 11,803 and 18,423

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Solution

The third proportional to 11,803 and 18,423 is: 28,755.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,803 : 18,423 = 18,423 : x
  2. Step 2: Convert to fraction form
    11,803/18,423 = 18,423/x
  3. Step 3: Cross multiply
    11,803x = 18,423 × 18,423
  4. Step 4: Simplify right side
    11,803x = 339,406,929
  5. Step 5: Solve for x
    x = 339,406,929/11,803
  6. Step 6: Final answer
    x = 28,755.99

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.