Home / 18,712.72-28,063.24-6,229.82

Finding the Fourth Proportional to 18,712.72, 28,063.24 and 6,229.82

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Solution

The fourth proportional to 18,712.72, 28,063.24 and 6,229.82 is: 9,342.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.72 : 28,063.24 = 6,229.82 : x
  2. Step 2: Convert to fraction form
    18,712.72/28,063.24 = 6,229.82/x
  3. Step 3: Cross multiply
    18,712.72x = 28,063.24 × 6,229.82
  4. Step 4: Simplify right side
    18,712.72x = 174,828,933.82
  5. Step 5: Solve for x
    x = 174,828,933.82/18,712.72
  6. Step 6: Final answer
    x = 9,342.79

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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.