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Finding the Third Proportional to 16,863.19 and 21,885.19

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Solution

The third proportional to 16,863.19 and 21,885.19 is: 28,402.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,863.19 : 21,885.19 = 21,885.19 : x
  2. Step 2: Convert to fraction form
    16,863.19/21,885.19 = 21,885.19/x
  3. Step 3: Cross multiply
    16,863.19x = 21,885.19 × 21,885.19
  4. Step 4: Simplify right side
    16,863.19x = 478,961,431.91
  5. Step 5: Solve for x
    x = 478,961,431.91/16,863.19
  6. Step 6: Final answer
    x = 28,402.78

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.