Home / 20,912.37-28,858.94-11,352.44

Finding the Fourth Proportional to 20,912.37, 28,858.94 and 11,352.44

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Solution

The fourth proportional to 20,912.37, 28,858.94 and 11,352.44 is: 15,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.37 : 28,858.94 = 11,352.44 : x
  2. Step 2: Convert to fraction form
    20,912.37/28,858.94 = 11,352.44/x
  3. Step 3: Cross multiply
    20,912.37x = 28,858.94 × 11,352.44
  4. Step 4: Simplify right side
    20,912.37x = 327,619,183.76
  5. Step 5: Solve for x
    x = 327,619,183.76/20,912.37
  6. Step 6: Final answer
    x = 15,666.29

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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.