Home / 18,331.92-27,531.90-12,789.09

Finding the Fourth Proportional to 18,331.92, 27,531.90 and 12,789.09

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Solution

The fourth proportional to 18,331.92, 27,531.90 and 12,789.09 is: 19,207.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,331.92 : 27,531.90 = 12,789.09 : x
  2. Step 2: Convert to fraction form
    18,331.92/27,531.90 = 12,789.09/x
  3. Step 3: Cross multiply
    18,331.92x = 27,531.90 × 12,789.09
  4. Step 4: Simplify right side
    18,331.92x = 352,107,946.97
  5. Step 5: Solve for x
    x = 352,107,946.97/18,331.92
  6. Step 6: Final answer
    x = 19,207.37

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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.