Home / 12,442.75-18,664.20-3,208.75

Finding the Fourth Proportional to 12,442.75, 18,664.20 and 3,208.75

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Solution

The fourth proportional to 12,442.75, 18,664.20 and 3,208.75 is: 4,813.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.75 : 18,664.20 = 3,208.75 : x
  2. Step 2: Convert to fraction form
    12,442.75/18,664.20 = 3,208.75/x
  3. Step 3: Cross multiply
    12,442.75x = 18,664.20 × 3,208.75
  4. Step 4: Simplify right side
    12,442.75x = 59,888,751.75
  5. Step 5: Solve for x
    x = 59,888,751.75/12,442.75
  6. Step 6: Final answer
    x = 4,813.14

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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.