Home / 20,889.37-28,828.85-11,936.68

Finding the Fourth Proportional to 20,889.37, 28,828.85 and 11,936.68

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Solution

The fourth proportional to 20,889.37, 28,828.85 and 11,936.68 is: 16,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.37 : 28,828.85 = 11,936.68 : x
  2. Step 2: Convert to fraction form
    20,889.37/28,828.85 = 11,936.68/x
  3. Step 3: Cross multiply
    20,889.37x = 28,828.85 × 11,936.68
  4. Step 4: Simplify right side
    20,889.37x = 344,120,757.22
  5. Step 5: Solve for x
    x = 344,120,757.22/20,889.37
  6. Step 6: Final answer
    x = 16,473.49

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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.