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Finding the Fourth Proportional to 17,965.70, 26,949.77 and 5,485.81

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Solution

The fourth proportional to 17,965.70, 26,949.77 and 5,485.81 is: 8,229.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,965.70 : 26,949.77 = 5,485.81 : x
  2. Step 2: Convert to fraction form
    17,965.70/26,949.77 = 5,485.81/x
  3. Step 3: Cross multiply
    17,965.70x = 26,949.77 × 5,485.81
  4. Step 4: Simplify right side
    17,965.70x = 147,841,317.76
  5. Step 5: Solve for x
    x = 147,841,317.76/17,965.70
  6. Step 6: Final answer
    x = 8,229.09

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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.