Home / 31,791.06-43,879.73-21,723.57

Finding the Fourth Proportional to 31,791.06, 43,879.73 and 21,723.57

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Solution

The fourth proportional to 31,791.06, 43,879.73 and 21,723.57 is: 29,984.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,791.06 : 43,879.73 = 21,723.57 : x
  2. Step 2: Convert to fraction form
    31,791.06/43,879.73 = 21,723.57/x
  3. Step 3: Cross multiply
    31,791.06x = 43,879.73 × 21,723.57
  4. Step 4: Simplify right side
    31,791.06x = 953,224,277.62
  5. Step 5: Solve for x
    x = 953,224,277.62/31,791.06
  6. Step 6: Final answer
    x = 29,984.04

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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.