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Finding the Fourth Proportional to 18,652.76, 27,965.44 and 8,786.48

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Solution

The fourth proportional to 18,652.76, 27,965.44 and 8,786.48 is: 13,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.76 : 27,965.44 = 8,786.48 : x
  2. Step 2: Convert to fraction form
    18,652.76/27,965.44 = 8,786.48/x
  3. Step 3: Cross multiply
    18,652.76x = 27,965.44 × 8,786.48
  4. Step 4: Simplify right side
    18,652.76x = 245,717,779.25
  5. Step 5: Solve for x
    x = 245,717,779.25/18,652.76
  6. Step 6: Final answer
    x = 13,173.27

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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.