Home / 20,792.87-28,690.29-11,843.18

Finding the Fourth Proportional to 20,792.87, 28,690.29 and 11,843.18

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Solution

The fourth proportional to 20,792.87, 28,690.29 and 11,843.18 is: 16,341.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.87 : 28,690.29 = 11,843.18 : x
  2. Step 2: Convert to fraction form
    20,792.87/28,690.29 = 11,843.18/x
  3. Step 3: Cross multiply
    20,792.87x = 28,690.29 × 11,843.18
  4. Step 4: Simplify right side
    20,792.87x = 339,784,125.27
  5. Step 5: Solve for x
    x = 339,784,125.27/20,792.87
  6. Step 6: Final answer
    x = 16,341.38

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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.