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Finding the Fourth Proportional to 18,838.27, 28,238.27 and 8,314.02

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Solution

The fourth proportional to 18,838.27, 28,238.27 and 8,314.02 is: 12,462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,838.27 : 28,238.27 = 8,314.02 : x
  2. Step 2: Convert to fraction form
    18,838.27/28,238.27 = 8,314.02/x
  3. Step 3: Cross multiply
    18,838.27x = 28,238.27 × 8,314.02
  4. Step 4: Simplify right side
    18,838.27x = 234,773,467.32
  5. Step 5: Solve for x
    x = 234,773,467.32/18,838.27
  6. Step 6: Final answer
    x = 12,462.58

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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.