Home / 20,561.26-28,373.97-11,486.38

Finding the Fourth Proportional to 20,561.26, 28,373.97 and 11,486.38

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Solution

The fourth proportional to 20,561.26, 28,373.97 and 11,486.38 is: 15,850.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.26 : 28,373.97 = 11,486.38 : x
  2. Step 2: Convert to fraction form
    20,561.26/28,373.97 = 11,486.38/x
  3. Step 3: Cross multiply
    20,561.26x = 28,373.97 × 11,486.38
  4. Step 4: Simplify right side
    20,561.26x = 325,914,201.53
  5. Step 5: Solve for x
    x = 325,914,201.53/20,561.26
  6. Step 6: Final answer
    x = 15,850.89

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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.