Home / 12,622.72-18,933.36-3,388

Finding the Fourth Proportional to 12,622.72, 18,933.36 and 3,388

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Solution

The fourth proportional to 12,622.72, 18,933.36 and 3,388 is: 5,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,622.72 : 18,933.36 = 3,388 : x
  2. Step 2: Convert to fraction form
    12,622.72/18,933.36 = 3,388/x
  3. Step 3: Cross multiply
    12,622.72x = 18,933.36 × 3,388
  4. Step 4: Simplify right side
    12,622.72x = 64,146,223.68
  5. Step 5: Solve for x
    x = 64,146,223.68/12,622.72
  6. Step 6: Final answer
    x = 5,081.81

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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.