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Finding the Fourth Proportional to 18,361.54, 27,458.25 and 13,684.80

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Solution

The fourth proportional to 18,361.54, 27,458.25 and 13,684.80 is: 20,464.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.54 : 27,458.25 = 13,684.80 : x
  2. Step 2: Convert to fraction form
    18,361.54/27,458.25 = 13,684.80/x
  3. Step 3: Cross multiply
    18,361.54x = 27,458.25 × 13,684.80
  4. Step 4: Simplify right side
    18,361.54x = 375,760,659.60
  5. Step 5: Solve for x
    x = 375,760,659.60/18,361.54
  6. Step 6: Final answer
    x = 20,464.55

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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.