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Finding the Fourth Proportional to 18,754.52, 28,145.62 and 8,893.82

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Solution

The fourth proportional to 18,754.52, 28,145.62 and 8,893.82 is: 13,347.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.52 : 28,145.62 = 8,893.82 : x
  2. Step 2: Convert to fraction form
    18,754.52/28,145.62 = 8,893.82/x
  3. Step 3: Cross multiply
    18,754.52x = 28,145.62 × 8,893.82
  4. Step 4: Simplify right side
    18,754.52x = 250,322,078.07
  5. Step 5: Solve for x
    x = 250,322,078.07/18,754.52
  6. Step 6: Final answer
    x = 13,347.29

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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.