Home / 11,425.06-15,764.91-6,388.66

Finding the Fourth Proportional to 11,425.06, 15,764.91 and 6,388.66

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Solution

The fourth proportional to 11,425.06, 15,764.91 and 6,388.66 is: 8,815.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.06 : 15,764.91 = 6,388.66 : x
  2. Step 2: Convert to fraction form
    11,425.06/15,764.91 = 6,388.66/x
  3. Step 3: Cross multiply
    11,425.06x = 15,764.91 × 6,388.66
  4. Step 4: Simplify right side
    11,425.06x = 100,716,649.92
  5. Step 5: Solve for x
    x = 100,716,649.92/11,425.06
  6. Step 6: Final answer
    x = 8,815.42

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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.