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Finding the Third Proportional to 21,163.78 and 28,324.69

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Solution

The third proportional to 21,163.78 and 28,324.69 is: 37,908.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.78 : 28,324.69 = 28,324.69 : x
  2. Step 2: Convert to fraction form
    21,163.78/28,324.69 = 28,324.69/x
  3. Step 3: Cross multiply
    21,163.78x = 28,324.69 × 28,324.69
  4. Step 4: Simplify right side
    21,163.78x = 802,287,921.97
  5. Step 5: Solve for x
    x = 802,287,921.97/21,163.78
  6. Step 6: Final answer
    x = 37,908.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.