Home / 20,792.05-28,693.06-11,839.56

Finding the Fourth Proportional to 20,792.05, 28,693.06 and 11,839.56

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Solution

The fourth proportional to 20,792.05, 28,693.06 and 11,839.56 is: 16,338.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.05 : 28,693.06 = 11,839.56 : x
  2. Step 2: Convert to fraction form
    20,792.05/28,693.06 = 11,839.56/x
  3. Step 3: Cross multiply
    20,792.05x = 28,693.06 × 11,839.56
  4. Step 4: Simplify right side
    20,792.05x = 339,713,205.45
  5. Step 5: Solve for x
    x = 339,713,205.45/20,792.05
  6. Step 6: Final answer
    x = 16,338.61

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1.5x scale

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.