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Finding the Fourth Proportional to 21,020.88, 31,537.98 and 6,229.86

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Solution

The fourth proportional to 21,020.88, 31,537.98 and 6,229.86 is: 9,346.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.88 : 31,537.98 = 6,229.86 : x
  2. Step 2: Convert to fraction form
    21,020.88/31,537.98 = 6,229.86/x
  3. Step 3: Cross multiply
    21,020.88x = 31,537.98 × 6,229.86
  4. Step 4: Simplify right side
    21,020.88x = 196,477,200.08
  5. Step 5: Solve for x
    x = 196,477,200.08/21,020.88
  6. Step 6: Final answer
    x = 9,346.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.