Home / 19,785.43-27,304.23-12,231.56

Finding the Fourth Proportional to 19,785.43, 27,304.23 and 12,231.56

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Solution

The fourth proportional to 19,785.43, 27,304.23 and 12,231.56 is: 16,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,785.43 : 27,304.23 = 12,231.56 : x
  2. Step 2: Convert to fraction form
    19,785.43/27,304.23 = 12,231.56/x
  3. Step 3: Cross multiply
    19,785.43x = 27,304.23 × 12,231.56
  4. Step 4: Simplify right side
    19,785.43x = 333,973,327.50
  5. Step 5: Solve for x
    x = 333,973,327.50/19,785.43
  6. Step 6: Final answer
    x = 16,879.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.