Home / 20,540.96-30,815.60-6,686.24

Finding the Fourth Proportional to 20,540.96, 30,815.60 and 6,686.24

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Solution

The fourth proportional to 20,540.96, 30,815.60 and 6,686.24 is: 10,030.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.96 : 30,815.60 = 6,686.24 : x
  2. Step 2: Convert to fraction form
    20,540.96/30,815.60 = 6,686.24/x
  3. Step 3: Cross multiply
    20,540.96x = 30,815.60 × 6,686.24
  4. Step 4: Simplify right side
    20,540.96x = 206,040,497.34
  5. Step 5: Solve for x
    x = 206,040,497.34/20,540.96
  6. Step 6: Final answer
    x = 10,030.71

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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.