Home / 20,792.25-28,693.91-11,361.42

Finding the Fourth Proportional to 20,792.25, 28,693.91 and 11,361.42

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Solution

The fourth proportional to 20,792.25, 28,693.91 and 11,361.42 is: 15,679.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.25 : 28,693.91 = 11,361.42 : x
  2. Step 2: Convert to fraction form
    20,792.25/28,693.91 = 11,361.42/x
  3. Step 3: Cross multiply
    20,792.25x = 28,693.91 × 11,361.42
  4. Step 4: Simplify right side
    20,792.25x = 326,003,591.36
  5. Step 5: Solve for x
    x = 326,003,591.36/20,792.25
  6. Step 6: Final answer
    x = 15,679.09

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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.