Home / 20,080.44-30,120.86-5,291.48

Finding the Fourth Proportional to 20,080.44, 30,120.86 and 5,291.48

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Solution

The fourth proportional to 20,080.44, 30,120.86 and 5,291.48 is: 7,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,080.44 : 30,120.86 = 5,291.48 : x
  2. Step 2: Convert to fraction form
    20,080.44/30,120.86 = 5,291.48/x
  3. Step 3: Cross multiply
    20,080.44x = 30,120.86 × 5,291.48
  4. Step 4: Simplify right side
    20,080.44x = 159,383,928.27
  5. Step 5: Solve for x
    x = 159,383,928.27/20,080.44
  6. Step 6: Final answer
    x = 7,937.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.