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Finding the Fourth Proportional to 18,625.82, 27,942.64 and 5,477.09

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Solution

The fourth proportional to 18,625.82, 27,942.64 and 5,477.09 is: 8,216.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.82 : 27,942.64 = 5,477.09 : x
  2. Step 2: Convert to fraction form
    18,625.82/27,942.64 = 5,477.09/x
  3. Step 3: Cross multiply
    18,625.82x = 27,942.64 × 5,477.09
  4. Step 4: Simplify right side
    18,625.82x = 153,044,200.71
  5. Step 5: Solve for x
    x = 153,044,200.71/18,625.82
  6. Step 6: Final answer
    x = 8,216.78

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1.5x scale

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.