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Finding the Fourth Proportional to 33,415.58, 50,103.93 and 12,640.70

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Solution

The fourth proportional to 33,415.58, 50,103.93 and 12,640.70 is: 18,953.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,415.58 : 50,103.93 = 12,640.70 : x
  2. Step 2: Convert to fraction form
    33,415.58/50,103.93 = 12,640.70/x
  3. Step 3: Cross multiply
    33,415.58x = 50,103.93 × 12,640.70
  4. Step 4: Simplify right side
    33,415.58x = 633,348,747.95
  5. Step 5: Solve for x
    x = 633,348,747.95/33,415.58
  6. Step 6: Final answer
    x = 18,953.70

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1.5x scale

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.