Home / 31,285.97-43,174.30-16,945.45

Finding the Fourth Proportional to 31,285.97, 43,174.30 and 16,945.45

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Solution

The fourth proportional to 31,285.97, 43,174.30 and 16,945.45 is: 23,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,285.97 : 43,174.30 = 16,945.45 : x
  2. Step 2: Convert to fraction form
    31,285.97/43,174.30 = 16,945.45/x
  3. Step 3: Cross multiply
    31,285.97x = 43,174.30 × 16,945.45
  4. Step 4: Simplify right side
    31,285.97x = 731,607,791.64
  5. Step 5: Solve for x
    x = 731,607,791.64/31,285.97
  6. Step 6: Final answer
    x = 23,384.53

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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.