Home / 20,258.22-27,976.38-13,188.75

Finding the Fourth Proportional to 20,258.22, 27,976.38 and 13,188.75

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Solution

The fourth proportional to 20,258.22, 27,976.38 and 13,188.75 is: 18,213.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.22 : 27,976.38 = 13,188.75 : x
  2. Step 2: Convert to fraction form
    20,258.22/27,976.38 = 13,188.75/x
  3. Step 3: Cross multiply
    20,258.22x = 27,976.38 × 13,188.75
  4. Step 4: Simplify right side
    20,258.22x = 368,973,481.73
  5. Step 5: Solve for x
    x = 368,973,481.73/20,258.22
  6. Step 6: Final answer
    x = 18,213.52

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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.