Home / 20,696.85-28,375.29-20,323.80

Finding the Fourth Proportional to 20,696.85, 28,375.29 and 20,323.80

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Solution

The fourth proportional to 20,696.85, 28,375.29 and 20,323.80 is: 27,863.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.85 : 28,375.29 = 20,323.80 : x
  2. Step 2: Convert to fraction form
    20,696.85/28,375.29 = 20,323.80/x
  3. Step 3: Cross multiply
    20,696.85x = 28,375.29 × 20,323.80
  4. Step 4: Simplify right side
    20,696.85x = 576,693,718.90
  5. Step 5: Solve for x
    x = 576,693,718.90/20,696.85
  6. Step 6: Final answer
    x = 27,863.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.