Home / 12,212.44-18,320.00-3,890.50

Finding the Fourth Proportional to 12,212.44, 18,320.00 and 3,890.50

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Solution

The fourth proportional to 12,212.44, 18,320.00 and 3,890.50 is: 5,836.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.44 : 18,320.00 = 3,890.50 : x
  2. Step 2: Convert to fraction form
    12,212.44/18,320.00 = 3,890.50/x
  3. Step 3: Cross multiply
    12,212.44x = 18,320.00 × 3,890.50
  4. Step 4: Simplify right side
    12,212.44x = 71,273,963.45
  5. Step 5: Solve for x
    x = 71,273,963.45/12,212.44
  6. Step 6: Final answer
    x = 5,836.18

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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.