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Finding the Fourth Proportional to 12,580.56, 18,873 and 3,697.20

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Solution

The fourth proportional to 12,580.56, 18,873 and 3,697.20 is: 5,546.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.56 : 18,873 = 3,697.20 : x
  2. Step 2: Convert to fraction form
    12,580.56/18,873 = 3,697.20/x
  3. Step 3: Cross multiply
    12,580.56x = 18,873 × 3,697.20
  4. Step 4: Simplify right side
    12,580.56x = 69,777,255.60
  5. Step 5: Solve for x
    x = 69,777,255.60/12,580.56
  6. Step 6: Final answer
    x = 5,546.43

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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.