Home / 20,352.87-30,540.31-8,507.68

Finding the Fourth Proportional to 20,352.87, 30,540.31 and 8,507.68

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Solution

The fourth proportional to 20,352.87, 30,540.31 and 8,507.68 is: 12,766.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.87 : 30,540.31 = 8,507.68 : x
  2. Step 2: Convert to fraction form
    20,352.87/30,540.31 = 8,507.68/x
  3. Step 3: Cross multiply
    20,352.87x = 30,540.31 × 8,507.68
  4. Step 4: Simplify right side
    20,352.87x = 259,827,086.96
  5. Step 5: Solve for x
    x = 259,827,086.96/20,352.87
  6. Step 6: Final answer
    x = 12,766.12

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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.