Home / 53,984.32-80,960.64-18,917.44

Finding the Fourth Proportional to 53,984.32, 80,960.64 and 18,917.44

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Solution

The fourth proportional to 53,984.32, 80,960.64 and 18,917.44 is: 28,370.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,984.32 : 80,960.64 = 18,917.44 : x
  2. Step 2: Convert to fraction form
    53,984.32/80,960.64 = 18,917.44/x
  3. Step 3: Cross multiply
    53,984.32x = 80,960.64 × 18,917.44
  4. Step 4: Simplify right side
    53,984.32x = 1,531,568,049.56
  5. Step 5: Solve for x
    x = 1,531,568,049.56/53,984.32
  6. Step 6: Final answer
    x = 28,370.61

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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.