Home / 20,936.29-28,893.36-11,983.58

Finding the Fourth Proportional to 20,936.29, 28,893.36 and 11,983.58

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Solution

The fourth proportional to 20,936.29, 28,893.36 and 11,983.58 is: 16,538.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.29 : 28,893.36 = 11,983.58 : x
  2. Step 2: Convert to fraction form
    20,936.29/28,893.36 = 11,983.58/x
  3. Step 3: Cross multiply
    20,936.29x = 28,893.36 × 11,983.58
  4. Step 4: Simplify right side
    20,936.29x = 346,245,891.03
  5. Step 5: Solve for x
    x = 346,245,891.03/20,936.29
  6. Step 6: Final answer
    x = 16,538.08

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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.