Home / 20,896.56-28,835.46-11,942.28

Finding the Fourth Proportional to 20,896.56, 28,835.46 and 11,942.28

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Solution

The fourth proportional to 20,896.56, 28,835.46 and 11,942.28 is: 16,479.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.56 : 28,835.46 = 11,942.28 : x
  2. Step 2: Convert to fraction form
    20,896.56/28,835.46 = 11,942.28/x
  3. Step 3: Cross multiply
    20,896.56x = 28,835.46 × 11,942.28
  4. Step 4: Simplify right side
    20,896.56x = 344,361,137.25
  5. Step 5: Solve for x
    x = 344,361,137.25/20,896.56
  6. Step 6: Final answer
    x = 16,479.32

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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.