Home / 18,729.28-28,093.91-5,581.31

Finding the Fourth Proportional to 18,729.28, 28,093.91 and 5,581.31

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Solution

The fourth proportional to 18,729.28, 28,093.91 and 5,581.31 is: 8,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.28 : 28,093.91 = 5,581.31 : x
  2. Step 2: Convert to fraction form
    18,729.28/28,093.91 = 5,581.31/x
  3. Step 3: Cross multiply
    18,729.28x = 28,093.91 × 5,581.31
  4. Step 4: Simplify right side
    18,729.28x = 156,800,820.82
  5. Step 5: Solve for x
    x = 156,800,820.82/18,729.28
  6. Step 6: Final answer
    x = 8,371.96

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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.