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Finding the Fourth Proportional to 26,600.32, 39,895.98 and 7,879.96

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Solution

The fourth proportional to 26,600.32, 39,895.98 and 7,879.96 is: 11,818.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,600.32 : 39,895.98 = 7,879.96 : x
  2. Step 2: Convert to fraction form
    26,600.32/39,895.98 = 7,879.96/x
  3. Step 3: Cross multiply
    26,600.32x = 39,895.98 × 7,879.96
  4. Step 4: Simplify right side
    26,600.32x = 314,378,726.56
  5. Step 5: Solve for x
    x = 314,378,726.56/26,600.32
  6. Step 6: Final answer
    x = 11,818.61

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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.