Home / 11,121.22-15,344.70-6,646.42

Finding the Fourth Proportional to 11,121.22, 15,344.70 and 6,646.42

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Solution

The fourth proportional to 11,121.22, 15,344.70 and 6,646.42 is: 9,170.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.22 : 15,344.70 = 6,646.42 : x
  2. Step 2: Convert to fraction form
    11,121.22/15,344.70 = 6,646.42/x
  3. Step 3: Cross multiply
    11,121.22x = 15,344.70 × 6,646.42
  4. Step 4: Simplify right side
    11,121.22x = 101,987,320.97
  5. Step 5: Solve for x
    x = 101,987,320.97/11,121.22
  6. Step 6: Final answer
    x = 9,170.52

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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.