Home / 31,689.09-43,723.80-18,257.27

Finding the Fourth Proportional to 31,689.09, 43,723.80 and 18,257.27

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Solution

The fourth proportional to 31,689.09, 43,723.80 and 18,257.27 is: 25,190.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.09 : 43,723.80 = 18,257.27 : x
  2. Step 2: Convert to fraction form
    31,689.09/43,723.80 = 18,257.27/x
  3. Step 3: Cross multiply
    31,689.09x = 43,723.80 × 18,257.27
  4. Step 4: Simplify right side
    31,689.09x = 798,277,003.41
  5. Step 5: Solve for x
    x = 798,277,003.41/31,689.09
  6. Step 6: Final answer
    x = 25,190.91

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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.