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Finding the Fourth Proportional to 13,105.44, 18,094.44 and 12,268.86

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Solution

The fourth proportional to 13,105.44, 18,094.44 and 12,268.86 is: 16,939.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,105.44 : 18,094.44 = 12,268.86 : x
  2. Step 2: Convert to fraction form
    13,105.44/18,094.44 = 12,268.86/x
  3. Step 3: Cross multiply
    13,105.44x = 18,094.44 × 12,268.86
  4. Step 4: Simplify right side
    13,105.44x = 221,998,151.14
  5. Step 5: Solve for x
    x = 221,998,151.14/13,105.44
  6. Step 6: Final answer
    x = 16,939.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.