Home / 20,405.22-28,160.22-11,452.96

Finding the Fourth Proportional to 20,405.22, 28,160.22 and 11,452.96

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Solution

The fourth proportional to 20,405.22, 28,160.22 and 11,452.96 is: 15,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.22 : 28,160.22 = 11,452.96 : x
  2. Step 2: Convert to fraction form
    20,405.22/28,160.22 = 11,452.96/x
  3. Step 3: Cross multiply
    20,405.22x = 28,160.22 × 11,452.96
  4. Step 4: Simplify right side
    20,405.22x = 322,517,873.25
  5. Step 5: Solve for x
    x = 322,517,873.25/20,405.22
  6. Step 6: Final answer
    x = 15,805.66

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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.