Home / 31,661.16-43,696.92-18,231.06

Finding the Fourth Proportional to 31,661.16, 43,696.92 and 18,231.06

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Solution

The fourth proportional to 31,661.16, 43,696.92 and 18,231.06 is: 25,161.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,661.16 : 43,696.92 = 18,231.06 : x
  2. Step 2: Convert to fraction form
    31,661.16/43,696.92 = 18,231.06/x
  3. Step 3: Cross multiply
    31,661.16x = 43,696.92 × 18,231.06
  4. Step 4: Simplify right side
    31,661.16x = 796,641,170.34
  5. Step 5: Solve for x
    x = 796,641,170.34/31,661.16
  6. Step 6: Final answer
    x = 25,161.47

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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.