Home / 18,512.71-25,520.96-13,198.30

Finding the Fourth Proportional to 18,512.71, 25,520.96 and 13,198.30

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Solution

The fourth proportional to 18,512.71, 25,520.96 and 13,198.30 is: 18,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.71 : 25,520.96 = 13,198.30 : x
  2. Step 2: Convert to fraction form
    18,512.71/25,520.96 = 13,198.30/x
  3. Step 3: Cross multiply
    18,512.71x = 25,520.96 × 13,198.30
  4. Step 4: Simplify right side
    18,512.71x = 336,833,286.37
  5. Step 5: Solve for x
    x = 336,833,286.37/18,512.71
  6. Step 6: Final answer
    x = 18,194.70

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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.