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Finding the Fourth Proportional to 33,993.90, 50,991.66 and 12,931.20

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Solution

The fourth proportional to 33,993.90, 50,991.66 and 12,931.20 is: 19,397.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,993.90 : 50,991.66 = 12,931.20 : x
  2. Step 2: Convert to fraction form
    33,993.90/50,991.66 = 12,931.20/x
  3. Step 3: Cross multiply
    33,993.90x = 50,991.66 × 12,931.20
  4. Step 4: Simplify right side
    33,993.90x = 659,383,353.79
  5. Step 5: Solve for x
    x = 659,383,353.79/33,993.90
  6. Step 6: Final answer
    x = 19,397.11

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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.