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Finding the Third Proportional to 20,318 and 29,685

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Solution

The third proportional to 20,318 and 29,685 is: 43,370.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318 : 29,685 = 29,685 : x
  2. Step 2: Convert to fraction form
    20,318/29,685 = 29,685/x
  3. Step 3: Cross multiply
    20,318x = 29,685 × 29,685
  4. Step 4: Simplify right side
    20,318x = 881,199,225
  5. Step 5: Solve for x
    x = 881,199,225/20,318
  6. Step 6: Final answer
    x = 43,370.37

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.