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Finding the Fourth Proportional to 33,142.88, 45,737.18 and 18,238.88

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Solution

The fourth proportional to 33,142.88, 45,737.18 and 18,238.88 is: 25,169.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,142.88 : 45,737.18 = 18,238.88 : x
  2. Step 2: Convert to fraction form
    33,142.88/45,737.18 = 18,238.88/x
  3. Step 3: Cross multiply
    33,142.88x = 45,737.18 × 18,238.88
  4. Step 4: Simplify right side
    33,142.88x = 834,194,617.68
  5. Step 5: Solve for x
    x = 834,194,617.68/33,142.88
  6. Step 6: Final answer
    x = 25,169.65

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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.