Home / 18,313.51-27,481.20-12,755.79

Finding the Fourth Proportional to 18,313.51, 27,481.20 and 12,755.79

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Solution

The fourth proportional to 18,313.51, 27,481.20 and 12,755.79 is: 19,141.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.51 : 27,481.20 = 12,755.79 : x
  2. Step 2: Convert to fraction form
    18,313.51/27,481.20 = 12,755.79/x
  3. Step 3: Cross multiply
    18,313.51x = 27,481.20 × 12,755.79
  4. Step 4: Simplify right side
    18,313.51x = 350,544,471.37
  5. Step 5: Solve for x
    x = 350,544,471.37/18,313.51
  6. Step 6: Final answer
    x = 19,141.31

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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.