Home / 20,906.35-28,850.77-11,954.03

Finding the Fourth Proportional to 20,906.35, 28,850.77 and 11,954.03

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Solution

The fourth proportional to 20,906.35, 28,850.77 and 11,954.03 is: 16,496.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906.35 : 28,850.77 = 11,954.03 : x
  2. Step 2: Convert to fraction form
    20,906.35/28,850.77 = 11,954.03/x
  3. Step 3: Cross multiply
    20,906.35x = 28,850.77 × 11,954.03
  4. Step 4: Simplify right side
    20,906.35x = 344,882,970.10
  5. Step 5: Solve for x
    x = 344,882,970.10/20,906.35
  6. Step 6: Final answer
    x = 16,496.57

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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.