Home / 20,464.75-28,241.49-11,512.18

Finding the Fourth Proportional to 20,464.75, 28,241.49 and 11,512.18

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Solution

The fourth proportional to 20,464.75, 28,241.49 and 11,512.18 is: 15,886.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.75 : 28,241.49 = 11,512.18 : x
  2. Step 2: Convert to fraction form
    20,464.75/28,241.49 = 11,512.18/x
  3. Step 3: Cross multiply
    20,464.75x = 28,241.49 × 11,512.18
  4. Step 4: Simplify right side
    20,464.75x = 325,121,116.35
  5. Step 5: Solve for x
    x = 325,121,116.35/20,464.75
  6. Step 6: Final answer
    x = 15,886.88

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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.