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Finding the Fourth Proportional to 26,490.36, 39,741.39 and 8,959.80

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Solution

The fourth proportional to 26,490.36, 39,741.39 and 8,959.80 is: 13,441.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,490.36 : 39,741.39 = 8,959.80 : x
  2. Step 2: Convert to fraction form
    26,490.36/39,741.39 = 8,959.80/x
  3. Step 3: Cross multiply
    26,490.36x = 39,741.39 × 8,959.80
  4. Step 4: Simplify right side
    26,490.36x = 356,074,906.12
  5. Step 5: Solve for x
    x = 356,074,906.12/26,490.36
  6. Step 6: Final answer
    x = 13,441.68

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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.