Home / 20,826.24-31,237.76-7,676.16

Finding the Fourth Proportional to 20,826.24, 31,237.76 and 7,676.16

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Solution

The fourth proportional to 20,826.24, 31,237.76 and 7,676.16 is: 11,513.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.24 : 31,237.76 = 7,676.16 : x
  2. Step 2: Convert to fraction form
    20,826.24/31,237.76 = 7,676.16/x
  3. Step 3: Cross multiply
    20,826.24x = 31,237.76 × 7,676.16
  4. Step 4: Simplify right side
    20,826.24x = 239,786,043.80
  5. Step 5: Solve for x
    x = 239,786,043.80/20,826.24
  6. Step 6: Final answer
    x = 11,513.65

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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.