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Finding the Third Proportional to 21,201.81 and 28,793.81

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Solution

The third proportional to 21,201.81 and 28,793.81 is: 39,104.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.81 : 28,793.81 = 28,793.81 : x
  2. Step 2: Convert to fraction form
    21,201.81/28,793.81 = 28,793.81/x
  3. Step 3: Cross multiply
    21,201.81x = 28,793.81 × 28,793.81
  4. Step 4: Simplify right side
    21,201.81x = 829,083,638.29
  5. Step 5: Solve for x
    x = 829,083,638.29/21,201.81
  6. Step 6: Final answer
    x = 39,104.38

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.