Home / 20,936.09-28,891.75-11,504.63

Finding the Fourth Proportional to 20,936.09, 28,891.75 and 11,504.63

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Solution

The fourth proportional to 20,936.09, 28,891.75 and 11,504.63 is: 15,876.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.09 : 28,891.75 = 11,504.63 : x
  2. Step 2: Convert to fraction form
    20,936.09/28,891.75 = 11,504.63/x
  3. Step 3: Cross multiply
    20,936.09x = 28,891.75 × 11,504.63
  4. Step 4: Simplify right side
    20,936.09x = 332,388,893.80
  5. Step 5: Solve for x
    x = 332,388,893.80/20,936.09
  6. Step 6: Final answer
    x = 15,876.36

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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.