Home / 20,960.77-28,917.32-11,884.22

Finding the Fourth Proportional to 20,960.77, 28,917.32 and 11,884.22

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Solution

The fourth proportional to 20,960.77, 28,917.32 and 11,884.22 is: 16,395.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.77 : 28,917.32 = 11,884.22 : x
  2. Step 2: Convert to fraction form
    20,960.77/28,917.32 = 11,884.22/x
  3. Step 3: Cross multiply
    20,960.77x = 28,917.32 × 11,884.22
  4. Step 4: Simplify right side
    20,960.77x = 343,659,732.03
  5. Step 5: Solve for x
    x = 343,659,732.03/20,960.77
  6. Step 6: Final answer
    x = 16,395.38

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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.