Home / 20,776.26-31,145.89-7,625.58

Finding the Fourth Proportional to 20,776.26, 31,145.89 and 7,625.58

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Solution

The fourth proportional to 20,776.26, 31,145.89 and 7,625.58 is: 11,431.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.26 : 31,145.89 = 7,625.58 : x
  2. Step 2: Convert to fraction form
    20,776.26/31,145.89 = 7,625.58/x
  3. Step 3: Cross multiply
    20,776.26x = 31,145.89 × 7,625.58
  4. Step 4: Simplify right side
    20,776.26x = 237,505,475.87
  5. Step 5: Solve for x
    x = 237,505,475.87/20,776.26
  6. Step 6: Final answer
    x = 11,431.58

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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.