Home / 20,147.20-30,216.23-7,662.77

Finding the Fourth Proportional to 20,147.20, 30,216.23 and 7,662.77

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Solution

The fourth proportional to 20,147.20, 30,216.23 and 7,662.77 is: 11,492.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.20 : 30,216.23 = 7,662.77 : x
  2. Step 2: Convert to fraction form
    20,147.20/30,216.23 = 7,662.77/x
  3. Step 3: Cross multiply
    20,147.20x = 30,216.23 × 7,662.77
  4. Step 4: Simplify right side
    20,147.20x = 231,540,020.76
  5. Step 5: Solve for x
    x = 231,540,020.76/20,147.20
  6. Step 6: Final answer
    x = 11,492.42

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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.