Home / 21,093.75-31,642.45-5,511.38

Finding the Fourth Proportional to 21,093.75, 31,642.45 and 5,511.38

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Solution

The fourth proportional to 21,093.75, 31,642.45 and 5,511.38 is: 8,267.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,093.75 : 31,642.45 = 5,511.38 : x
  2. Step 2: Convert to fraction form
    21,093.75/31,642.45 = 5,511.38/x
  3. Step 3: Cross multiply
    21,093.75x = 31,642.45 × 5,511.38
  4. Step 4: Simplify right side
    21,093.75x = 174,393,394.09
  5. Step 5: Solve for x
    x = 174,393,394.09/21,093.75
  6. Step 6: Final answer
    x = 8,267.54

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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.