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Finding the Fourth Proportional to 18,520.74, 27,773.41 and 11,490.19

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Solution

The fourth proportional to 18,520.74, 27,773.41 and 11,490.19 is: 17,230.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.74 : 27,773.41 = 11,490.19 : x
  2. Step 2: Convert to fraction form
    18,520.74/27,773.41 = 11,490.19/x
  3. Step 3: Cross multiply
    18,520.74x = 27,773.41 × 11,490.19
  4. Step 4: Simplify right side
    18,520.74x = 319,121,757.85
  5. Step 5: Solve for x
    x = 319,121,757.85/18,520.74
  6. Step 6: Final answer
    x = 17,230.51

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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.