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Finding the Fourth Proportional to 18,379.99, 27,545.14 and 13,174.39

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Solution

The fourth proportional to 18,379.99, 27,545.14 and 13,174.39 is: 19,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.99 : 27,545.14 = 13,174.39 : x
  2. Step 2: Convert to fraction form
    18,379.99/27,545.14 = 13,174.39/x
  3. Step 3: Cross multiply
    18,379.99x = 27,545.14 × 13,174.39
  4. Step 4: Simplify right side
    18,379.99x = 362,890,416.96
  5. Step 5: Solve for x
    x = 362,890,416.96/18,379.99
  6. Step 6: Final answer
    x = 19,743.78

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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.