Home / 20,580.20-28,399.37-11,626.25

Finding the Fourth Proportional to 20,580.20, 28,399.37 and 11,626.25

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Solution

The fourth proportional to 20,580.20, 28,399.37 and 11,626.25 is: 16,043.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.20 : 28,399.37 = 11,626.25 : x
  2. Step 2: Convert to fraction form
    20,580.20/28,399.37 = 11,626.25/x
  3. Step 3: Cross multiply
    20,580.20x = 28,399.37 × 11,626.25
  4. Step 4: Simplify right side
    20,580.20x = 330,177,975.33
  5. Step 5: Solve for x
    x = 330,177,975.33/20,580.20
  6. Step 6: Final answer
    x = 16,043.48

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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.