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Finding the Fourth Proportional to 18,561.86, 27,845.79 and 6,078.26

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Solution

The fourth proportional to 18,561.86, 27,845.79 and 6,078.26 is: 9,118.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,561.86 : 27,845.79 = 6,078.26 : x
  2. Step 2: Convert to fraction form
    18,561.86/27,845.79 = 6,078.26/x
  3. Step 3: Cross multiply
    18,561.86x = 27,845.79 × 6,078.26
  4. Step 4: Simplify right side
    18,561.86x = 169,253,951.53
  5. Step 5: Solve for x
    x = 169,253,951.53/18,561.86
  6. Step 6: Final answer
    x = 9,118.37

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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.