Home / 20,405.62-30,604.85-5,610.97

Finding the Fourth Proportional to 20,405.62, 30,604.85 and 5,610.97

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Solution

The fourth proportional to 20,405.62, 30,604.85 and 5,610.97 is: 8,415.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.62 : 30,604.85 = 5,610.97 : x
  2. Step 2: Convert to fraction form
    20,405.62/30,604.85 = 5,610.97/x
  3. Step 3: Cross multiply
    20,405.62x = 30,604.85 × 5,610.97
  4. Step 4: Simplify right side
    20,405.62x = 171,722,867.15
  5. Step 5: Solve for x
    x = 171,722,867.15/20,405.62
  6. Step 6: Final answer
    x = 8,415.47

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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.