Home / 20,826.88-31,240.29-6,786.89

Finding the Fourth Proportional to 20,826.88, 31,240.29 and 6,786.89

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Solution

The fourth proportional to 20,826.88, 31,240.29 and 6,786.89 is: 10,180.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.88 : 31,240.29 = 6,786.89 : x
  2. Step 2: Convert to fraction form
    20,826.88/31,240.29 = 6,786.89/x
  3. Step 3: Cross multiply
    20,826.88x = 31,240.29 × 6,786.89
  4. Step 4: Simplify right side
    20,826.88x = 212,024,411.80
  5. Step 5: Solve for x
    x = 212,024,411.80/20,826.88
  6. Step 6: Final answer
    x = 10,180.33

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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.