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Finding the Fourth Proportional to 33,991.99, 50,987.79 and 13,215.49

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Solution

The fourth proportional to 33,991.99, 50,987.79 and 13,215.49 is: 19,823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,991.99 : 50,987.79 = 13,215.49 : x
  2. Step 2: Convert to fraction form
    33,991.99/50,987.79 = 13,215.49/x
  3. Step 3: Cross multiply
    33,991.99x = 50,987.79 × 13,215.49
  4. Step 4: Simplify right side
    33,991.99x = 673,828,628.87
  5. Step 5: Solve for x
    x = 673,828,628.87/33,991.99
  6. Step 6: Final answer
    x = 19,823.16

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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.