Home / 20,087.40-27,720.14-11,589.54

Finding the Fourth Proportional to 20,087.40, 27,720.14 and 11,589.54

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Solution

The fourth proportional to 20,087.40, 27,720.14 and 11,589.54 is: 15,993.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.40 : 27,720.14 = 11,589.54 : x
  2. Step 2: Convert to fraction form
    20,087.40/27,720.14 = 11,589.54/x
  3. Step 3: Cross multiply
    20,087.40x = 27,720.14 × 11,589.54
  4. Step 4: Simplify right side
    20,087.40x = 321,263,613.39
  5. Step 5: Solve for x
    x = 321,263,613.39/20,087.40
  6. Step 6: Final answer
    x = 15,993.29

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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.