Home / 11,621.26-16,010.22-8,078.32

Finding the Fourth Proportional to 11,621.26, 16,010.22 and 8,078.32

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Solution

The fourth proportional to 11,621.26, 16,010.22 and 8,078.32 is: 11,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.26 : 16,010.22 = 8,078.32 : x
  2. Step 2: Convert to fraction form
    11,621.26/16,010.22 = 8,078.32/x
  3. Step 3: Cross multiply
    11,621.26x = 16,010.22 × 8,078.32
  4. Step 4: Simplify right side
    11,621.26x = 129,335,680.43
  5. Step 5: Solve for x
    x = 129,335,680.43/11,621.26
  6. Step 6: Final answer
    x = 11,129.23

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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.