Home / 20,696.64-28,561.92-11,265.60

Finding the Fourth Proportional to 20,696.64, 28,561.92 and 11,265.60

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Solution

The fourth proportional to 20,696.64, 28,561.92 and 11,265.60 is: 15,546.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.64 : 28,561.92 = 11,265.60 : x
  2. Step 2: Convert to fraction form
    20,696.64/28,561.92 = 11,265.60/x
  3. Step 3: Cross multiply
    20,696.64x = 28,561.92 × 11,265.60
  4. Step 4: Simplify right side
    20,696.64x = 321,767,165.95
  5. Step 5: Solve for x
    x = 321,767,165.95/20,696.64
  6. Step 6: Final answer
    x = 15,546.83

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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.