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Finding the Third Proportional to 20,381.63 and 28,863.84

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Solution

The third proportional to 20,381.63 and 28,863.84 is: 40,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381.63 : 28,863.84 = 28,863.84 : x
  2. Step 2: Convert to fraction form
    20,381.63/28,863.84 = 28,863.84/x
  3. Step 3: Cross multiply
    20,381.63x = 28,863.84 × 28,863.84
  4. Step 4: Simplify right side
    20,381.63x = 833,121,476.02
  5. Step 5: Solve for x
    x = 833,121,476.02/20,381.63
  6. Step 6: Final answer
    x = 40,876.11

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.