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Finding the Fourth Proportional to 18,203.22, 27,304.83 and 12,345.30

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Solution

The fourth proportional to 18,203.22, 27,304.83 and 12,345.30 is: 18,517.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.22 : 27,304.83 = 12,345.30 : x
  2. Step 2: Convert to fraction form
    18,203.22/27,304.83 = 12,345.30/x
  3. Step 3: Cross multiply
    18,203.22x = 27,304.83 × 12,345.30
  4. Step 4: Simplify right side
    18,203.22x = 337,086,317.80
  5. Step 5: Solve for x
    x = 337,086,317.80/18,203.22
  6. Step 6: Final answer
    x = 18,517.95

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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.