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Finding the Fourth Proportional to 18,523.68, 27,786.93 and 7,993.95

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Solution

The fourth proportional to 18,523.68, 27,786.93 and 7,993.95 is: 11,991.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.68 : 27,786.93 = 7,993.95 : x
  2. Step 2: Convert to fraction form
    18,523.68/27,786.93 = 7,993.95/x
  3. Step 3: Cross multiply
    18,523.68x = 27,786.93 × 7,993.95
  4. Step 4: Simplify right side
    18,523.68x = 222,127,329.07
  5. Step 5: Solve for x
    x = 222,127,329.07/18,523.68
  6. Step 6: Final answer
    x = 11,991.53

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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.