Home / 11,343.88-15,643.38-7,150.60

Finding the Fourth Proportional to 11,343.88, 15,643.38 and 7,150.60

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Solution

The fourth proportional to 11,343.88, 15,643.38 and 7,150.60 is: 9,860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,343.88 : 15,643.38 = 7,150.60 : x
  2. Step 2: Convert to fraction form
    11,343.88/15,643.38 = 7,150.60/x
  3. Step 3: Cross multiply
    11,343.88x = 15,643.38 × 7,150.60
  4. Step 4: Simplify right side
    11,343.88x = 111,859,553.03
  5. Step 5: Solve for x
    x = 111,859,553.03/11,343.88
  6. Step 6: Final answer
    x = 9,860.78

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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.