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Finding the Fourth Proportional to 18,231.20, 27,364.08 and 9,472.40

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Solution

The fourth proportional to 18,231.20, 27,364.08 and 9,472.40 is: 14,217.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.20 : 27,364.08 = 9,472.40 : x
  2. Step 2: Convert to fraction form
    18,231.20/27,364.08 = 9,472.40/x
  3. Step 3: Cross multiply
    18,231.20x = 27,364.08 × 9,472.40
  4. Step 4: Simplify right side
    18,231.20x = 259,203,511.39
  5. Step 5: Solve for x
    x = 259,203,511.39/18,231.20
  6. Step 6: Final answer
    x = 14,217.58

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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.