Home / 31,629.26-43,631.10-20,286.14

Finding the Fourth Proportional to 31,629.26, 43,631.10 and 20,286.14

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Solution

The fourth proportional to 31,629.26, 43,631.10 and 20,286.14 is: 27,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,629.26 : 43,631.10 = 20,286.14 : x
  2. Step 2: Convert to fraction form
    31,629.26/43,631.10 = 20,286.14/x
  3. Step 3: Cross multiply
    31,629.26x = 43,631.10 × 20,286.14
  4. Step 4: Simplify right side
    31,629.26x = 885,106,384.80
  5. Step 5: Solve for x
    x = 885,106,384.80/31,629.26
  6. Step 6: Final answer
    x = 27,983.78

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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.