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Finding the Fourth Proportional to 18,526.82, 27,781.73 and 7,991.79

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Solution

The fourth proportional to 18,526.82, 27,781.73 and 7,991.79 is: 11,984.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,526.82 : 27,781.73 = 7,991.79 : x
  2. Step 2: Convert to fraction form
    18,526.82/27,781.73 = 7,991.79/x
  3. Step 3: Cross multiply
    18,526.82x = 27,781.73 × 7,991.79
  4. Step 4: Simplify right side
    18,526.82x = 222,025,712.04
  5. Step 5: Solve for x
    x = 222,025,712.04/18,526.82
  6. Step 6: Final answer
    x = 11,984.02

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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.