Home / 20,862.73-28,792.62-11,911.58

Finding the Fourth Proportional to 20,862.73, 28,792.62 and 11,911.58

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Solution

The fourth proportional to 20,862.73, 28,792.62 and 11,911.58 is: 16,439.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.73 : 28,792.62 = 11,911.58 : x
  2. Step 2: Convert to fraction form
    20,862.73/28,792.62 = 11,911.58/x
  3. Step 3: Cross multiply
    20,862.73x = 28,792.62 × 11,911.58
  4. Step 4: Simplify right side
    20,862.73x = 342,965,505.39
  5. Step 5: Solve for x
    x = 342,965,505.39/20,862.73
  6. Step 6: Final answer
    x = 16,439.15

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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.