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Finding the Fourth Proportional to 33,143.76, 45,738.39 and 18,239.76

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Solution

The fourth proportional to 33,143.76, 45,738.39 and 18,239.76 is: 25,170.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,143.76 : 45,738.39 = 18,239.76 : x
  2. Step 2: Convert to fraction form
    33,143.76/45,738.39 = 18,239.76/x
  3. Step 3: Cross multiply
    33,143.76x = 45,738.39 × 18,239.76
  4. Step 4: Simplify right side
    33,143.76x = 834,257,239.03
  5. Step 5: Solve for x
    x = 834,257,239.03/33,143.76
  6. Step 6: Final answer
    x = 25,170.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.