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Finding the Fourth Proportional to 20,441.77, 30,640.78 and 10,571.11

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Solution

The fourth proportional to 20,441.77, 30,640.78 and 10,571.11 is: 15,845.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,441.77 : 30,640.78 = 10,571.11 : x
  2. Step 2: Convert to fraction form
    20,441.77/30,640.78 = 10,571.11/x
  3. Step 3: Cross multiply
    20,441.77x = 30,640.78 × 10,571.11
  4. Step 4: Simplify right side
    20,441.77x = 323,906,992.48
  5. Step 5: Solve for x
    x = 323,906,992.48/20,441.77
  6. Step 6: Final answer
    x = 15,845.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.