Home / 31,687.86-43,716.46-18,251.93

Finding the Fourth Proportional to 31,687.86, 43,716.46 and 18,251.93

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Solution

The fourth proportional to 31,687.86, 43,716.46 and 18,251.93 is: 25,180.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.86 : 43,716.46 = 18,251.93 : x
  2. Step 2: Convert to fraction form
    31,687.86/43,716.46 = 18,251.93/x
  3. Step 3: Cross multiply
    31,687.86x = 43,716.46 × 18,251.93
  4. Step 4: Simplify right side
    31,687.86x = 797,909,865.65
  5. Step 5: Solve for x
    x = 797,909,865.65/31,687.86
  6. Step 6: Final answer
    x = 25,180.30

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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.