Home / 18,258.71-27,388.97-5,112.41

Finding the Fourth Proportional to 18,258.71, 27,388.97 and 5,112.41

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Solution

The fourth proportional to 18,258.71, 27,388.97 and 5,112.41 is: 7,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258.71 : 27,388.97 = 5,112.41 : x
  2. Step 2: Convert to fraction form
    18,258.71/27,388.97 = 5,112.41/x
  3. Step 3: Cross multiply
    18,258.71x = 27,388.97 × 5,112.41
  4. Step 4: Simplify right side
    18,258.71x = 140,023,481.61
  5. Step 5: Solve for x
    x = 140,023,481.61/18,258.71
  6. Step 6: Final answer
    x = 7,668.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.