Home / 31,685.37-43,722.82-18,936.02

Finding the Fourth Proportional to 31,685.37, 43,722.82 and 18,936.02

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Solution

The fourth proportional to 31,685.37, 43,722.82 and 18,936.02 is: 26,129.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.37 : 43,722.82 = 18,936.02 : x
  2. Step 2: Convert to fraction form
    31,685.37/43,722.82 = 18,936.02/x
  3. Step 3: Cross multiply
    31,685.37x = 43,722.82 × 18,936.02
  4. Step 4: Simplify right side
    31,685.37x = 827,935,975.36
  5. Step 5: Solve for x
    x = 827,935,975.36/31,685.37
  6. Step 6: Final answer
    x = 26,129.91

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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.