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Finding the Fourth Proportional to 18,650.64, 27,976.05 and 6,963.75

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Solution

The fourth proportional to 18,650.64, 27,976.05 and 6,963.75 is: 10,445.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.64 : 27,976.05 = 6,963.75 : x
  2. Step 2: Convert to fraction form
    18,650.64/27,976.05 = 6,963.75/x
  3. Step 3: Cross multiply
    18,650.64x = 27,976.05 × 6,963.75
  4. Step 4: Simplify right side
    18,650.64x = 194,818,218.19
  5. Step 5: Solve for x
    x = 194,818,218.19/18,650.64
  6. Step 6: Final answer
    x = 10,445.66

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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.