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Finding the Third Proportional to 20,831.50 and 29,161.50

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Solution

The third proportional to 20,831.50 and 29,161.50 is: 40,822.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.50 : 29,161.50 = 29,161.50 : x
  2. Step 2: Convert to fraction form
    20,831.50/29,161.50 = 29,161.50/x
  3. Step 3: Cross multiply
    20,831.50x = 29,161.50 × 29,161.50
  4. Step 4: Simplify right side
    20,831.50x = 850,393,082.25
  5. Step 5: Solve for x
    x = 850,393,082.25/20,831.50
  6. Step 6: Final answer
    x = 40,822.46

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.