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Finding the Fourth Proportional to 18,727.56, 28,091.52 and 7,632

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Solution

The fourth proportional to 18,727.56, 28,091.52 and 7,632 is: 11,448.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.56 : 28,091.52 = 7,632 : x
  2. Step 2: Convert to fraction form
    18,727.56/28,091.52 = 7,632/x
  3. Step 3: Cross multiply
    18,727.56x = 28,091.52 × 7,632
  4. Step 4: Simplify right side
    18,727.56x = 214,394,480.64
  5. Step 5: Solve for x
    x = 214,394,480.64/18,727.56
  6. Step 6: Final answer
    x = 11,448.07

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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.