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Finding the Fourth Proportional to 33,994.84, 50,990.64 and 12,939.72

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Solution

The fourth proportional to 33,994.84, 50,990.64 and 12,939.72 is: 19,408.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,994.84 : 50,990.64 = 12,939.72 : x
  2. Step 2: Convert to fraction form
    33,994.84/50,990.64 = 12,939.72/x
  3. Step 3: Cross multiply
    33,994.84x = 50,990.64 × 12,939.72
  4. Step 4: Simplify right side
    33,994.84x = 659,804,604.22
  5. Step 5: Solve for x
    x = 659,804,604.22/33,994.84
  6. Step 6: Final answer
    x = 19,408.96

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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.