Home / 20,792.94-28,694.34-11,361.50

Finding the Fourth Proportional to 20,792.94, 28,694.34 and 11,361.50

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Solution

The fourth proportional to 20,792.94, 28,694.34 and 11,361.50 is: 15,678.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.94 : 28,694.34 = 11,361.50 : x
  2. Step 2: Convert to fraction form
    20,792.94/28,694.34 = 11,361.50/x
  3. Step 3: Cross multiply
    20,792.94x = 28,694.34 × 11,361.50
  4. Step 4: Simplify right side
    20,792.94x = 326,010,743.91
  5. Step 5: Solve for x
    x = 326,010,743.91/20,792.94
  6. Step 6: Final answer
    x = 15,678.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.