Home / 20,615.19-28,449.05-11,183.82

Finding the Fourth Proportional to 20,615.19, 28,449.05 and 11,183.82

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Solution

The fourth proportional to 20,615.19, 28,449.05 and 11,183.82 is: 15,433.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.19 : 28,449.05 = 11,183.82 : x
  2. Step 2: Convert to fraction form
    20,615.19/28,449.05 = 11,183.82/x
  3. Step 3: Cross multiply
    20,615.19x = 28,449.05 × 11,183.82
  4. Step 4: Simplify right side
    20,615.19x = 318,168,998.45
  5. Step 5: Solve for x
    x = 318,168,998.45/20,615.19
  6. Step 6: Final answer
    x = 15,433.72

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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.