Home / 12,135.56-18,203.31-3,816.30

Finding the Fourth Proportional to 12,135.56, 18,203.31 and 3,816.30

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Solution

The fourth proportional to 12,135.56, 18,203.31 and 3,816.30 is: 5,724.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.56 : 18,203.31 = 3,816.30 : x
  2. Step 2: Convert to fraction form
    12,135.56/18,203.31 = 3,816.30/x
  3. Step 3: Cross multiply
    12,135.56x = 18,203.31 × 3,816.30
  4. Step 4: Simplify right side
    12,135.56x = 69,469,291.95
  5. Step 5: Solve for x
    x = 69,469,291.95/12,135.56
  6. Step 6: Final answer
    x = 5,724.44

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1.5x scale

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.