Home / 20,615.41-28,449.20-11,183.97

Finding the Fourth Proportional to 20,615.41, 28,449.20 and 11,183.97

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Solution

The fourth proportional to 20,615.41, 28,449.20 and 11,183.97 is: 15,433.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.41 : 28,449.20 = 11,183.97 : x
  2. Step 2: Convert to fraction form
    20,615.41/28,449.20 = 11,183.97/x
  3. Step 3: Cross multiply
    20,615.41x = 28,449.20 × 11,183.97
  4. Step 4: Simplify right side
    20,615.41x = 318,174,999.32
  5. Step 5: Solve for x
    x = 318,174,999.32/20,615.41
  6. Step 6: Final answer
    x = 15,433.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.