Home / 31,168.80-43,012.26-17,021.70

Finding the Fourth Proportional to 31,168.80, 43,012.26 and 17,021.70

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Solution

The fourth proportional to 31,168.80, 43,012.26 and 17,021.70 is: 23,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,168.80 : 43,012.26 = 17,021.70 : x
  2. Step 2: Convert to fraction form
    31,168.80/43,012.26 = 17,021.70/x
  3. Step 3: Cross multiply
    31,168.80x = 43,012.26 × 17,021.70
  4. Step 4: Simplify right side
    31,168.80x = 732,141,786.04
  5. Step 5: Solve for x
    x = 732,141,786.04/31,168.80
  6. Step 6: Final answer
    x = 23,489.57

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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.