Home / 20,132.16-30,198.40-6,281.60

Finding the Fourth Proportional to 20,132.16, 30,198.40 and 6,281.60

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Solution

The fourth proportional to 20,132.16, 30,198.40 and 6,281.60 is: 9,422.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.16 : 30,198.40 = 6,281.60 : x
  2. Step 2: Convert to fraction form
    20,132.16/30,198.40 = 6,281.60/x
  3. Step 3: Cross multiply
    20,132.16x = 30,198.40 × 6,281.60
  4. Step 4: Simplify right side
    20,132.16x = 189,694,269.44
  5. Step 5: Solve for x
    x = 189,694,269.44/20,132.16
  6. Step 6: Final answer
    x = 9,422.45

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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.