Home / 31,391.28-43,317.36-17,243.64

Finding the Fourth Proportional to 31,391.28, 43,317.36 and 17,243.64

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Solution

The fourth proportional to 31,391.28, 43,317.36 and 17,243.64 is: 23,794.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.28 : 43,317.36 = 17,243.64 : x
  2. Step 2: Convert to fraction form
    31,391.28/43,317.36 = 17,243.64/x
  3. Step 3: Cross multiply
    31,391.28x = 43,317.36 × 17,243.64
  4. Step 4: Simplify right side
    31,391.28x = 746,948,961.59
  5. Step 5: Solve for x
    x = 746,948,961.59/31,391.28
  6. Step 6: Final answer
    x = 23,794.79

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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.