Home / 20,758.14-28,647.90-11,808.36

Finding the Fourth Proportional to 20,758.14, 28,647.90 and 11,808.36

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Solution

The fourth proportional to 20,758.14, 28,647.90 and 11,808.36 is: 16,296.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.14 : 28,647.90 = 11,808.36 : x
  2. Step 2: Convert to fraction form
    20,758.14/28,647.90 = 11,808.36/x
  3. Step 3: Cross multiply
    20,758.14x = 28,647.90 × 11,808.36
  4. Step 4: Simplify right side
    20,758.14x = 338,284,716.44
  5. Step 5: Solve for x
    x = 338,284,716.44/20,758.14
  6. Step 6: Final answer
    x = 16,296.48

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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.