Home / 21,223-31,836.53-8,743.87

Finding the Fourth Proportional to 21,223, 31,836.53 and 8,743.87

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Solution

The fourth proportional to 21,223, 31,836.53 and 8,743.87 is: 13,116.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,223 : 31,836.53 = 8,743.87 : x
  2. Step 2: Convert to fraction form
    21,223/31,836.53 = 8,743.87/x
  3. Step 3: Cross multiply
    21,223x = 31,836.53 × 8,743.87
  4. Step 4: Simplify right side
    21,223x = 278,374,435.85
  5. Step 5: Solve for x
    x = 278,374,435.85/21,223
  6. Step 6: Final answer
    x = 13,116.64

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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.