Home / 20,696.81-28,561.97-11,265.44

Finding the Fourth Proportional to 20,696.81, 28,561.97 and 11,265.44

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Solution

The fourth proportional to 20,696.81, 28,561.97 and 11,265.44 is: 15,546.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.81 : 28,561.97 = 11,265.44 : x
  2. Step 2: Convert to fraction form
    20,696.81/28,561.97 = 11,265.44/x
  3. Step 3: Cross multiply
    20,696.81x = 28,561.97 × 11,265.44
  4. Step 4: Simplify right side
    20,696.81x = 321,763,102.99
  5. Step 5: Solve for x
    x = 321,763,102.99/20,696.81
  6. Step 6: Final answer
    x = 15,546.51

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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.