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Finding the Fourth Proportional to 18,574.60, 27,861.60 and 7,481.02

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Solution

The fourth proportional to 18,574.60, 27,861.60 and 7,481.02 is: 11,221.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,574.60 : 27,861.60 = 7,481.02 : x
  2. Step 2: Convert to fraction form
    18,574.60/27,861.60 = 7,481.02/x
  3. Step 3: Cross multiply
    18,574.60x = 27,861.60 × 7,481.02
  4. Step 4: Simplify right side
    18,574.60x = 208,433,186.83
  5. Step 5: Solve for x
    x = 208,433,186.83/18,574.60
  6. Step 6: Final answer
    x = 11,221.41

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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.