Home / 20,668.32-28,522.40-11,236.96

Finding the Fourth Proportional to 20,668.32, 28,522.40 and 11,236.96

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Solution

The fourth proportional to 20,668.32, 28,522.40 and 11,236.96 is: 15,507.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.32 : 28,522.40 = 11,236.96 : x
  2. Step 2: Convert to fraction form
    20,668.32/28,522.40 = 11,236.96/x
  3. Step 3: Cross multiply
    20,668.32x = 28,522.40 × 11,236.96
  4. Step 4: Simplify right side
    20,668.32x = 320,505,067.90
  5. Step 5: Solve for x
    x = 320,505,067.90/20,668.32
  6. Step 6: Final answer
    x = 15,507.07

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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.