Home / 31,628.82-43,661.94-20,148.66

Finding the Fourth Proportional to 31,628.82, 43,661.94 and 20,148.66

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Solution

The fourth proportional to 31,628.82, 43,661.94 and 20,148.66 is: 27,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.82 : 43,661.94 = 20,148.66 : x
  2. Step 2: Convert to fraction form
    31,628.82/43,661.94 = 20,148.66/x
  3. Step 3: Cross multiply
    31,628.82x = 43,661.94 × 20,148.66
  4. Step 4: Simplify right side
    31,628.82x = 879,729,584.00
  5. Step 5: Solve for x
    x = 879,729,584.00/31,628.82
  6. Step 6: Final answer
    x = 27,814.18

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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.