Home / 20,826.28-31,239.39-6,786.29

Finding the Fourth Proportional to 20,826.28, 31,239.39 and 6,786.29

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Solution

The fourth proportional to 20,826.28, 31,239.39 and 6,786.29 is: 10,179.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.28 : 31,239.39 = 6,786.29 : x
  2. Step 2: Convert to fraction form
    20,826.28/31,239.39 = 6,786.29/x
  3. Step 3: Cross multiply
    20,826.28x = 31,239.39 × 6,786.29
  4. Step 4: Simplify right side
    20,826.28x = 211,999,403.77
  5. Step 5: Solve for x
    x = 211,999,403.77/20,826.28
  6. Step 6: Final answer
    x = 10,179.42

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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.