Home / 33,120.55-49,668.81-18,138.80

Finding the Fourth Proportional to 33,120.55, 49,668.81 and 18,138.80

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Solution

The fourth proportional to 33,120.55, 49,668.81 and 18,138.80 is: 27,201.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,120.55 : 49,668.81 = 18,138.80 : x
  2. Step 2: Convert to fraction form
    33,120.55/49,668.81 = 18,138.80/x
  3. Step 3: Cross multiply
    33,120.55x = 49,668.81 × 18,138.80
  4. Step 4: Simplify right side
    33,120.55x = 900,932,717.99
  5. Step 5: Solve for x
    x = 900,932,717.99/33,120.55
  6. Step 6: Final answer
    x = 27,201.62

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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.