Home / 20,276.12-30,414.96-5,485.05

Finding the Fourth Proportional to 20,276.12, 30,414.96 and 5,485.05

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Solution

The fourth proportional to 20,276.12, 30,414.96 and 5,485.05 is: 8,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.12 : 30,414.96 = 5,485.05 : x
  2. Step 2: Convert to fraction form
    20,276.12/30,414.96 = 5,485.05/x
  3. Step 3: Cross multiply
    20,276.12x = 30,414.96 × 5,485.05
  4. Step 4: Simplify right side
    20,276.12x = 166,827,576.35
  5. Step 5: Solve for x
    x = 166,827,576.35/20,276.12
  6. Step 6: Final answer
    x = 8,227.78

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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.