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Finding the Fourth Proportional to 33,990.99, 50,986.29 and 13,214.49

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Solution

The fourth proportional to 33,990.99, 50,986.29 and 13,214.49 is: 19,821.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,990.99 : 50,986.29 = 13,214.49 : x
  2. Step 2: Convert to fraction form
    33,990.99/50,986.29 = 13,214.49/x
  3. Step 3: Cross multiply
    33,990.99x = 50,986.29 × 13,214.49
  4. Step 4: Simplify right side
    33,990.99x = 673,757,853.00
  5. Step 5: Solve for x
    x = 673,757,853.00/33,990.99
  6. Step 6: Final answer
    x = 19,821.66

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Similar ratio
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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.