Home / 12,239.56-18,362.34-3,919.60

Finding the Fourth Proportional to 12,239.56, 18,362.34 and 3,919.60

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Solution

The fourth proportional to 12,239.56, 18,362.34 and 3,919.60 is: 5,880.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.56 : 18,362.34 = 3,919.60 : x
  2. Step 2: Convert to fraction form
    12,239.56/18,362.34 = 3,919.60/x
  3. Step 3: Cross multiply
    12,239.56x = 18,362.34 × 3,919.60
  4. Step 4: Simplify right side
    12,239.56x = 71,973,027.86
  5. Step 5: Solve for x
    x = 71,973,027.86/12,239.56
  6. Step 6: Final answer
    x = 5,880.36

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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.