Home / 20,786.58-31,176-5,589.36

Finding the Fourth Proportional to 20,786.58, 31,176 and 5,589.36

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Solution

The fourth proportional to 20,786.58, 31,176 and 5,589.36 is: 8,383.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.58 : 31,176 = 5,589.36 : x
  2. Step 2: Convert to fraction form
    20,786.58/31,176 = 5,589.36/x
  3. Step 3: Cross multiply
    20,786.58x = 31,176 × 5,589.36
  4. Step 4: Simplify right side
    20,786.58x = 174,253,887.36
  5. Step 5: Solve for x
    x = 174,253,887.36/20,786.58
  6. Step 6: Final answer
    x = 8,383.00

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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.