Home / 20,522.68-28,321.20-11,091.22

Finding the Fourth Proportional to 20,522.68, 28,321.20 and 11,091.22

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Solution

The fourth proportional to 20,522.68, 28,321.20 and 11,091.22 is: 15,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,522.68 : 28,321.20 = 11,091.22 : x
  2. Step 2: Convert to fraction form
    20,522.68/28,321.20 = 11,091.22/x
  3. Step 3: Cross multiply
    20,522.68x = 28,321.20 × 11,091.22
  4. Step 4: Simplify right side
    20,522.68x = 314,116,659.86
  5. Step 5: Solve for x
    x = 314,116,659.86/20,522.68
  6. Step 6: Final answer
    x = 15,305.83

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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.