Home / 31,772.06-43,847.44-18,345.78

Finding the Fourth Proportional to 31,772.06, 43,847.44 and 18,345.78

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Solution

The fourth proportional to 31,772.06, 43,847.44 and 18,345.78 is: 25,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,772.06 : 43,847.44 = 18,345.78 : x
  2. Step 2: Convert to fraction form
    31,772.06/43,847.44 = 18,345.78/x
  3. Step 3: Cross multiply
    31,772.06x = 43,847.44 × 18,345.78
  4. Step 4: Simplify right side
    31,772.06x = 804,415,487.80
  5. Step 5: Solve for x
    x = 804,415,487.80/31,772.06
  6. Step 6: Final answer
    x = 25,318.33

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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.