Home / 20,884.20-31,325.46-6,845.28

Finding the Fourth Proportional to 20,884.20, 31,325.46 and 6,845.28

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Solution

The fourth proportional to 20,884.20, 31,325.46 and 6,845.28 is: 10,267.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.20 : 31,325.46 = 6,845.28 : x
  2. Step 2: Convert to fraction form
    20,884.20/31,325.46 = 6,845.28/x
  3. Step 3: Cross multiply
    20,884.20x = 31,325.46 × 6,845.28
  4. Step 4: Simplify right side
    20,884.20x = 214,431,544.83
  5. Step 5: Solve for x
    x = 214,431,544.83/20,884.20
  6. Step 6: Final answer
    x = 10,267.64

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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.