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Finding the Fourth Proportional to 18,326.28, 27,489.36 and 12,468.36

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Solution

The fourth proportional to 18,326.28, 27,489.36 and 12,468.36 is: 18,702.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.28 : 27,489.36 = 12,468.36 : x
  2. Step 2: Convert to fraction form
    18,326.28/27,489.36 = 12,468.36/x
  3. Step 3: Cross multiply
    18,326.28x = 27,489.36 × 12,468.36
  4. Step 4: Simplify right side
    18,326.28x = 342,747,236.65
  5. Step 5: Solve for x
    x = 342,747,236.65/18,326.28
  6. Step 6: Final answer
    x = 18,702.50

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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.