Home / 20,112.87-30,169.62-7,629.60

Finding the Fourth Proportional to 20,112.87, 30,169.62 and 7,629.60

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Solution

The fourth proportional to 20,112.87, 30,169.62 and 7,629.60 is: 11,444.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,112.87 : 30,169.62 = 7,629.60 : x
  2. Step 2: Convert to fraction form
    20,112.87/30,169.62 = 7,629.60/x
  3. Step 3: Cross multiply
    20,112.87x = 30,169.62 × 7,629.60
  4. Step 4: Simplify right side
    20,112.87x = 230,182,132.75
  5. Step 5: Solve for x
    x = 230,182,132.75/20,112.87
  6. Step 6: Final answer
    x = 11,444.52

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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.