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Finding the Fourth Proportional to 12,379.70, 18,539.26 and 11,180.26

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Solution

The fourth proportional to 12,379.70, 18,539.26 and 11,180.26 is: 16,743.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.70 : 18,539.26 = 11,180.26 : x
  2. Step 2: Convert to fraction form
    12,379.70/18,539.26 = 11,180.26/x
  3. Step 3: Cross multiply
    12,379.70x = 18,539.26 × 11,180.26
  4. Step 4: Simplify right side
    12,379.70x = 207,273,691.11
  5. Step 5: Solve for x
    x = 207,273,691.11/12,379.70
  6. Step 6: Final answer
    x = 16,743.03

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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.