Home / 26,788.39-36,859.32-21,990.69

Finding the Fourth Proportional to 26,788.39, 36,859.32 and 21,990.69

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Solution

The fourth proportional to 26,788.39, 36,859.32 and 21,990.69 is: 30,257.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,788.39 : 36,859.32 = 21,990.69 : x
  2. Step 2: Convert to fraction form
    26,788.39/36,859.32 = 21,990.69/x
  3. Step 3: Cross multiply
    26,788.39x = 36,859.32 × 21,990.69
  4. Step 4: Simplify right side
    26,788.39x = 810,561,879.73
  5. Step 5: Solve for x
    x = 810,561,879.73/26,788.39
  6. Step 6: Final answer
    x = 30,257.96

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1.5x scale

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.