Home / 12,141.44-18,200.80-5,561

Finding the Fourth Proportional to 12,141.44, 18,200.80 and 5,561

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Solution

The fourth proportional to 12,141.44, 18,200.80 and 5,561 is: 8,336.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.44 : 18,200.80 = 5,561 : x
  2. Step 2: Convert to fraction form
    12,141.44/18,200.80 = 5,561/x
  3. Step 3: Cross multiply
    12,141.44x = 18,200.80 × 5,561
  4. Step 4: Simplify right side
    12,141.44x = 101,214,648.80
  5. Step 5: Solve for x
    x = 101,214,648.80/12,141.44
  6. Step 6: Final answer
    x = 8,336.30

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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.