Home / 12,135.30-18,202.94-3,816.05

Finding the Fourth Proportional to 12,135.30, 18,202.94 and 3,816.05

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Solution

The fourth proportional to 12,135.30, 18,202.94 and 3,816.05 is: 5,724.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.30 : 18,202.94 = 3,816.05 : x
  2. Step 2: Convert to fraction form
    12,135.30/18,202.94 = 3,816.05/x
  3. Step 3: Cross multiply
    12,135.30x = 18,202.94 × 3,816.05
  4. Step 4: Simplify right side
    12,135.30x = 69,463,329.19
  5. Step 5: Solve for x
    x = 69,463,329.19/12,135.30
  6. Step 6: Final answer
    x = 5,724.07

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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.