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Finding the Fourth Proportional to 18,580.74, 27,871.14 and 4,540.74

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Solution

The fourth proportional to 18,580.74, 27,871.14 and 4,540.74 is: 6,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,580.74 : 27,871.14 = 4,540.74 : x
  2. Step 2: Convert to fraction form
    18,580.74/27,871.14 = 4,540.74/x
  3. Step 3: Cross multiply
    18,580.74x = 27,871.14 × 4,540.74
  4. Step 4: Simplify right side
    18,580.74x = 126,555,600.24
  5. Step 5: Solve for x
    x = 126,555,600.24/18,580.74
  6. Step 6: Final answer
    x = 6,811.12

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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.