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Finding the Fourth Proportional to 18,406.20, 27,579.60 and 16,656.60

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Solution

The fourth proportional to 18,406.20, 27,579.60 and 16,656.60 is: 24,958.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.20 : 27,579.60 = 16,656.60 : x
  2. Step 2: Convert to fraction form
    18,406.20/27,579.60 = 16,656.60/x
  3. Step 3: Cross multiply
    18,406.20x = 27,579.60 × 16,656.60
  4. Step 4: Simplify right side
    18,406.20x = 459,382,365.36
  5. Step 5: Solve for x
    x = 459,382,365.36/18,406.20
  6. Step 6: Final answer
    x = 24,958.02

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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.