Home / 20,183.10-30,290.31-13,986.54

Finding the Fourth Proportional to 20,183.10, 30,290.31 and 13,986.54

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Solution

The fourth proportional to 20,183.10, 30,290.31 and 13,986.54 is: 20,990.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.10 : 30,290.31 = 13,986.54 : x
  2. Step 2: Convert to fraction form
    20,183.10/30,290.31 = 13,986.54/x
  3. Step 3: Cross multiply
    20,183.10x = 30,290.31 × 13,986.54
  4. Step 4: Simplify right side
    20,183.10x = 423,656,632.43
  5. Step 5: Solve for x
    x = 423,656,632.43/20,183.10
  6. Step 6: Final answer
    x = 20,990.66

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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.