Home / 21,280.56-31,910.94-6,491.04

Finding the Fourth Proportional to 21,280.56, 31,910.94 and 6,491.04

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Solution

The fourth proportional to 21,280.56, 31,910.94 and 6,491.04 is: 9,733.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.56 : 31,910.94 = 6,491.04 : x
  2. Step 2: Convert to fraction form
    21,280.56/31,910.94 = 6,491.04/x
  3. Step 3: Cross multiply
    21,280.56x = 31,910.94 × 6,491.04
  4. Step 4: Simplify right side
    21,280.56x = 207,135,187.98
  5. Step 5: Solve for x
    x = 207,135,187.98/21,280.56
  6. Step 6: Final answer
    x = 9,733.54

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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.