Home / 11,190.24-15,452.84-7,218.16

Finding the Fourth Proportional to 11,190.24, 15,452.84 and 7,218.16

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Solution

The fourth proportional to 11,190.24, 15,452.84 and 7,218.16 is: 9,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190.24 : 15,452.84 = 7,218.16 : x
  2. Step 2: Convert to fraction form
    11,190.24/15,452.84 = 7,218.16/x
  3. Step 3: Cross multiply
    11,190.24x = 15,452.84 × 7,218.16
  4. Step 4: Simplify right side
    11,190.24x = 111,541,071.57
  5. Step 5: Solve for x
    x = 111,541,071.57/11,190.24
  6. Step 6: Final answer
    x = 9,967.71

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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.