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Finding the Fourth Proportional to 18,145.62, 27,194.54 and 16,961.81

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Solution

The fourth proportional to 18,145.62, 27,194.54 and 16,961.81 is: 25,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.62 : 27,194.54 = 16,961.81 : x
  2. Step 2: Convert to fraction form
    18,145.62/27,194.54 = 16,961.81/x
  3. Step 3: Cross multiply
    18,145.62x = 27,194.54 × 16,961.81
  4. Step 4: Simplify right side
    18,145.62x = 461,268,399.74
  5. Step 5: Solve for x
    x = 461,268,399.74/18,145.62
  6. Step 6: Final answer
    x = 25,420.37

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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.