Home / 21,222.89-31,834.37-6,431.93

Finding the Fourth Proportional to 21,222.89, 31,834.37 and 6,431.93

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Solution

The fourth proportional to 21,222.89, 31,834.37 and 6,431.93 is: 9,647.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.89 : 31,834.37 = 6,431.93 : x
  2. Step 2: Convert to fraction form
    21,222.89/31,834.37 = 6,431.93/x
  3. Step 3: Cross multiply
    21,222.89x = 31,834.37 × 6,431.93
  4. Step 4: Simplify right side
    21,222.89x = 204,756,469.08
  5. Step 5: Solve for x
    x = 204,756,469.08/21,222.89
  6. Step 6: Final answer
    x = 9,647.91

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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.