Home / 20,464.26-28,240.77-11,511.87

Finding the Fourth Proportional to 20,464.26, 28,240.77 and 11,511.87

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Solution

The fourth proportional to 20,464.26, 28,240.77 and 11,511.87 is: 15,886.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.26 : 28,240.77 = 11,511.87 : x
  2. Step 2: Convert to fraction form
    20,464.26/28,240.77 = 11,511.87/x
  3. Step 3: Cross multiply
    20,464.26x = 28,240.77 × 11,511.87
  4. Step 4: Simplify right side
    20,464.26x = 325,104,072.94
  5. Step 5: Solve for x
    x = 325,104,072.94/20,464.26
  6. Step 6: Final answer
    x = 15,886.43

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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.