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Finding the Fourth Proportional to 18,203.63, 27,311.97 and 7,118.27

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Solution

The fourth proportional to 18,203.63, 27,311.97 and 7,118.27 is: 10,679.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.63 : 27,311.97 = 7,118.27 : x
  2. Step 2: Convert to fraction form
    18,203.63/27,311.97 = 7,118.27/x
  3. Step 3: Cross multiply
    18,203.63x = 27,311.97 × 7,118.27
  4. Step 4: Simplify right side
    18,203.63x = 194,413,840.13
  5. Step 5: Solve for x
    x = 194,413,840.13/18,203.63
  6. Step 6: Final answer
    x = 10,679.95

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1.5x scale

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.