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Finding the Fourth Proportional to 18,495.91, 27,750.84 and 11,105.51

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Solution

The fourth proportional to 18,495.91, 27,750.84 and 11,105.51 is: 16,662.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.91 : 27,750.84 = 11,105.51 : x
  2. Step 2: Convert to fraction form
    18,495.91/27,750.84 = 11,105.51/x
  3. Step 3: Cross multiply
    18,495.91x = 27,750.84 × 11,105.51
  4. Step 4: Simplify right side
    18,495.91x = 308,187,050.73
  5. Step 5: Solve for x
    x = 308,187,050.73/18,495.91
  6. Step 6: Final answer
    x = 16,662.44

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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.