Home / 18,422.19-27,610.16-7,879.81

Finding the Fourth Proportional to 18,422.19, 27,610.16 and 7,879.81

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Solution

The fourth proportional to 18,422.19, 27,610.16 and 7,879.81 is: 11,809.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,422.19 : 27,610.16 = 7,879.81 : x
  2. Step 2: Convert to fraction form
    18,422.19/27,610.16 = 7,879.81/x
  3. Step 3: Cross multiply
    18,422.19x = 27,610.16 × 7,879.81
  4. Step 4: Simplify right side
    18,422.19x = 217,562,814.87
  5. Step 5: Solve for x
    x = 217,562,814.87/18,422.19
  6. Step 6: Final answer
    x = 11,809.82

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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.