Home / 20,780.08-28,673.82-11,704.27

Finding the Fourth Proportional to 20,780.08, 28,673.82 and 11,704.27

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Solution

The fourth proportional to 20,780.08, 28,673.82 and 11,704.27 is: 16,150.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780.08 : 28,673.82 = 11,704.27 : x
  2. Step 2: Convert to fraction form
    20,780.08/28,673.82 = 11,704.27/x
  3. Step 3: Cross multiply
    20,780.08x = 28,673.82 × 11,704.27
  4. Step 4: Simplify right side
    20,780.08x = 335,606,131.21
  5. Step 5: Solve for x
    x = 335,606,131.21/20,780.08
  6. Step 6: Final answer
    x = 16,150.38

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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.