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Finding the Fourth Proportional to 12,194.60, 18,330.30 and 11,964.20

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Solution

The fourth proportional to 12,194.60, 18,330.30 and 11,964.20 is: 17,983.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,194.60 : 18,330.30 = 11,964.20 : x
  2. Step 2: Convert to fraction form
    12,194.60/18,330.30 = 11,964.20/x
  3. Step 3: Cross multiply
    12,194.60x = 18,330.30 × 11,964.20
  4. Step 4: Simplify right side
    12,194.60x = 219,307,375.26
  5. Step 5: Solve for x
    x = 219,307,375.26/12,194.60
  6. Step 6: Final answer
    x = 17,983.97

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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.