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Finding the Fourth Proportional to 26,489.68, 39,733.49 and 8,959.51

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Solution

The fourth proportional to 26,489.68, 39,733.49 and 8,959.51 is: 13,438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,489.68 : 39,733.49 = 8,959.51 : x
  2. Step 2: Convert to fraction form
    26,489.68/39,733.49 = 8,959.51/x
  3. Step 3: Cross multiply
    26,489.68x = 39,733.49 × 8,959.51
  4. Step 4: Simplify right side
    26,489.68x = 355,992,524.05
  5. Step 5: Solve for x
    x = 355,992,524.05/26,489.68
  6. Step 6: Final answer
    x = 13,438.91

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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.