Home / 31,786.36-43,868.94-21,711.56

Finding the Fourth Proportional to 31,786.36, 43,868.94 and 21,711.56

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Solution

The fourth proportional to 31,786.36, 43,868.94 and 21,711.56 is: 29,964.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.36 : 43,868.94 = 21,711.56 : x
  2. Step 2: Convert to fraction form
    31,786.36/43,868.94 = 21,711.56/x
  3. Step 3: Cross multiply
    31,786.36x = 43,868.94 × 21,711.56
  4. Step 4: Simplify right side
    31,786.36x = 952,463,122.95
  5. Step 5: Solve for x
    x = 952,463,122.95/31,786.36
  6. Step 6: Final answer
    x = 29,964.52

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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.