Home / 20,774.61-31,160.86-7,625.97

Finding the Fourth Proportional to 20,774.61, 31,160.86 and 7,625.97

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Solution

The fourth proportional to 20,774.61, 31,160.86 and 7,625.97 is: 11,438.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.61 : 31,160.86 = 7,625.97 : x
  2. Step 2: Convert to fraction form
    20,774.61/31,160.86 = 7,625.97/x
  3. Step 3: Cross multiply
    20,774.61x = 31,160.86 × 7,625.97
  4. Step 4: Simplify right side
    20,774.61x = 237,631,764.47
  5. Step 5: Solve for x
    x = 237,631,764.47/20,774.61
  6. Step 6: Final answer
    x = 11,438.57

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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.