Home / 20,695.87-30,884.77-18,481.42

Finding the Fourth Proportional to 20,695.87, 30,884.77 and 18,481.42

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Solution

The fourth proportional to 20,695.87, 30,884.77 and 18,481.42 is: 27,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.87 : 30,884.77 = 18,481.42 : x
  2. Step 2: Convert to fraction form
    20,695.87/30,884.77 = 18,481.42/x
  3. Step 3: Cross multiply
    20,695.87x = 30,884.77 × 18,481.42
  4. Step 4: Simplify right side
    20,695.87x = 570,794,405.97
  5. Step 5: Solve for x
    x = 570,794,405.97/20,695.87
  6. Step 6: Final answer
    x = 27,580.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.