Home / 20,809.22-28,709.69-11,850.37

Finding the Fourth Proportional to 20,809.22, 28,709.69 and 11,850.37

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Solution

The fourth proportional to 20,809.22, 28,709.69 and 11,850.37 is: 16,349.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.22 : 28,709.69 = 11,850.37 : x
  2. Step 2: Convert to fraction form
    20,809.22/28,709.69 = 11,850.37/x
  3. Step 3: Cross multiply
    20,809.22x = 28,709.69 × 11,850.37
  4. Step 4: Simplify right side
    20,809.22x = 340,220,449.09
  5. Step 5: Solve for x
    x = 340,220,449.09/20,809.22
  6. Step 6: Final answer
    x = 16,349.51

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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.