Home / 31,390.67-43,321.25-17,243.66

Finding the Fourth Proportional to 31,390.67, 43,321.25 and 17,243.66

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Solution

The fourth proportional to 31,390.67, 43,321.25 and 17,243.66 is: 23,797.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.67 : 43,321.25 = 17,243.66 : x
  2. Step 2: Convert to fraction form
    31,390.67/43,321.25 = 17,243.66/x
  3. Step 3: Cross multiply
    31,390.67x = 43,321.25 × 17,243.66
  4. Step 4: Simplify right side
    31,390.67x = 747,016,905.78
  5. Step 5: Solve for x
    x = 747,016,905.78/31,390.67
  6. Step 6: Final answer
    x = 23,797.42

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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.