Home / 20,816.94-31,223.39-11,453.88

Finding the Fourth Proportional to 20,816.94, 31,223.39 and 11,453.88

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Solution

The fourth proportional to 20,816.94, 31,223.39 and 11,453.88 is: 17,179.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.94 : 31,223.39 = 11,453.88 : x
  2. Step 2: Convert to fraction form
    20,816.94/31,223.39 = 11,453.88/x
  3. Step 3: Cross multiply
    20,816.94x = 31,223.39 × 11,453.88
  4. Step 4: Simplify right side
    20,816.94x = 357,628,904.98
  5. Step 5: Solve for x
    x = 357,628,904.98/20,816.94
  6. Step 6: Final answer
    x = 17,179.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.