Home / 21,939.18-32,912.86-8,792.58

Finding the Fourth Proportional to 21,939.18, 32,912.86 and 8,792.58

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Solution

The fourth proportional to 21,939.18, 32,912.86 and 8,792.58 is: 13,190.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.18 : 32,912.86 = 8,792.58 : x
  2. Step 2: Convert to fraction form
    21,939.18/32,912.86 = 8,792.58/x
  3. Step 3: Cross multiply
    21,939.18x = 32,912.86 × 8,792.58
  4. Step 4: Simplify right side
    21,939.18x = 289,388,965.57
  5. Step 5: Solve for x
    x = 289,388,965.57/21,939.18
  6. Step 6: Final answer
    x = 13,190.51

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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.