Home / 20,754.03-28,640.67-11,322.60

Finding the Fourth Proportional to 20,754.03, 28,640.67 and 11,322.60

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Solution

The fourth proportional to 20,754.03, 28,640.67 and 11,322.60 is: 15,625.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.03 : 28,640.67 = 11,322.60 : x
  2. Step 2: Convert to fraction form
    20,754.03/28,640.67 = 11,322.60/x
  3. Step 3: Cross multiply
    20,754.03x = 28,640.67 × 11,322.60
  4. Step 4: Simplify right side
    20,754.03x = 324,286,850.14
  5. Step 5: Solve for x
    x = 324,286,850.14/20,754.03
  6. Step 6: Final answer
    x = 15,625.25

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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.