Home / 11,121.26-15,347.32-6,406.44

Finding the Fourth Proportional to 11,121.26, 15,347.32 and 6,406.44

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Solution

The fourth proportional to 11,121.26, 15,347.32 and 6,406.44 is: 8,840.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.26 : 15,347.32 = 6,406.44 : x
  2. Step 2: Convert to fraction form
    11,121.26/15,347.32 = 6,406.44/x
  3. Step 3: Cross multiply
    11,121.26x = 15,347.32 × 6,406.44
  4. Step 4: Simplify right side
    11,121.26x = 98,321,684.74
  5. Step 5: Solve for x
    x = 98,321,684.74/11,121.26
  6. Step 6: Final answer
    x = 8,840.88

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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.