Home / 20,810,642.37-28,716,290.26-11,991,378.97

Finding the Fourth Proportional to 20,810,642.37, 28,716,290.26 and 11,991,378.97

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Solution

The fourth proportional to 20,810,642.37, 28,716,290.26 and 11,991,378.97 is: 16,546,722.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810,642.37 : 28,716,290.26 = 11,991,378.97 : x
  2. Step 2: Convert to fraction form
    20,810,642.37/28,716,290.26 = 11,991,378.97/x
  3. Step 3: Cross multiply
    20,810,642.37x = 28,716,290.26 × 11,991,378.97
  4. Step 4: Simplify right side
    20,810,642.37x = 344,347,919,120,179.88
  5. Step 5: Solve for x
    x = 344,347,919,120,179.88/20,810,642.37
  6. Step 6: Final answer
    x = 16,546,722.25

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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.