Home / 20,309.49-30,464.19-5,520.56

Finding the Fourth Proportional to 20,309.49, 30,464.19 and 5,520.56

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Solution

The fourth proportional to 20,309.49, 30,464.19 and 5,520.56 is: 8,280.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.49 : 30,464.19 = 5,520.56 : x
  2. Step 2: Convert to fraction form
    20,309.49/30,464.19 = 5,520.56/x
  3. Step 3: Cross multiply
    20,309.49x = 30,464.19 × 5,520.56
  4. Step 4: Simplify right side
    20,309.49x = 168,179,236.43
  5. Step 5: Solve for x
    x = 168,179,236.43/20,309.49
  6. Step 6: Final answer
    x = 8,280.82

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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.