Home / 31,179.78-43,028.08-16,839.61

Finding the Fourth Proportional to 31,179.78, 43,028.08 and 16,839.61

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Solution

The fourth proportional to 31,179.78, 43,028.08 and 16,839.61 is: 23,238.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,179.78 : 43,028.08 = 16,839.61 : x
  2. Step 2: Convert to fraction form
    31,179.78/43,028.08 = 16,839.61/x
  3. Step 3: Cross multiply
    31,179.78x = 43,028.08 × 16,839.61
  4. Step 4: Simplify right side
    31,179.78x = 724,576,086.25
  5. Step 5: Solve for x
    x = 724,576,086.25/31,179.78
  6. Step 6: Final answer
    x = 23,238.65

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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.