Home / 20,485.62-28,270.44-11,993.04

Finding the Fourth Proportional to 20,485.62, 28,270.44 and 11,993.04

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Solution

The fourth proportional to 20,485.62, 28,270.44 and 11,993.04 is: 16,550.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.62 : 28,270.44 = 11,993.04 : x
  2. Step 2: Convert to fraction form
    20,485.62/28,270.44 = 11,993.04/x
  3. Step 3: Cross multiply
    20,485.62x = 28,270.44 × 11,993.04
  4. Step 4: Simplify right side
    20,485.62x = 339,048,517.74
  5. Step 5: Solve for x
    x = 339,048,517.74/20,485.62
  6. Step 6: Final answer
    x = 16,550.56

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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.