Home / 20,906.09-28,850.36-11,474.45

Finding the Fourth Proportional to 20,906.09, 28,850.36 and 11,474.45

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Solution

The fourth proportional to 20,906.09, 28,850.36 and 11,474.45 is: 15,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.09 : 28,850.36 = 11,474.45 : x
  2. Step 2: Convert to fraction form
    20,906.09/28,850.36 = 11,474.45/x
  3. Step 3: Cross multiply
    20,906.09x = 28,850.36 × 11,474.45
  4. Step 4: Simplify right side
    20,906.09x = 331,041,811.68
  5. Step 5: Solve for x
    x = 331,041,811.68/20,906.09
  6. Step 6: Final answer
    x = 15,834.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.