Home / 11,121.75-15,349.41-7,296.60

Finding the Fourth Proportional to 11,121.75, 15,349.41 and 7,296.60

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Solution

The fourth proportional to 11,121.75, 15,349.41 and 7,296.60 is: 10,070.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.75 : 15,349.41 = 7,296.60 : x
  2. Step 2: Convert to fraction form
    11,121.75/15,349.41 = 7,296.60/x
  3. Step 3: Cross multiply
    11,121.75x = 15,349.41 × 7,296.60
  4. Step 4: Simplify right side
    11,121.75x = 111,998,505.01
  5. Step 5: Solve for x
    x = 111,998,505.01/11,121.75
  6. Step 6: Final answer
    x = 10,070.22

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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.