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Finding the Fourth Proportional to 11,054.80, 15,256.80 and 6,339.92

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Solution

The fourth proportional to 11,054.80, 15,256.80 and 6,339.92 is: 8,749.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,054.80 : 15,256.80 = 6,339.92 : x
  2. Step 2: Convert to fraction form
    11,054.80/15,256.80 = 6,339.92/x
  3. Step 3: Cross multiply
    11,054.80x = 15,256.80 × 6,339.92
  4. Step 4: Simplify right side
    11,054.80x = 96,726,891.46
  5. Step 5: Solve for x
    x = 96,726,891.46/11,054.80
  6. Step 6: Final answer
    x = 8,749.76

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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.