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Finding the Third Proportional to 18,423 and 38,358

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Solution

The third proportional to 18,423 and 38,358 is: 79,864.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423 : 38,358 = 38,358 : x
  2. Step 2: Convert to fraction form
    18,423/38,358 = 38,358/x
  3. Step 3: Cross multiply
    18,423x = 38,358 × 38,358
  4. Step 4: Simplify right side
    18,423x = 1,471,336,164
  5. Step 5: Solve for x
    x = 1,471,336,164/18,423
  6. Step 6: Final answer
    x = 79,864.09

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.