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Finding the Fourth Proportional to 18,653.08, 27,984.46 and 8,262.36

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Solution

The fourth proportional to 18,653.08, 27,984.46 and 8,262.36 is: 12,395.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,653.08 : 27,984.46 = 8,262.36 : x
  2. Step 2: Convert to fraction form
    18,653.08/27,984.46 = 8,262.36/x
  3. Step 3: Cross multiply
    18,653.08x = 27,984.46 × 8,262.36
  4. Step 4: Simplify right side
    18,653.08x = 231,217,682.93
  5. Step 5: Solve for x
    x = 231,217,682.93/18,653.08
  6. Step 6: Final answer
    x = 12,395.68

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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.