Home / 11,682.15-16,121.75-6,646.25

Finding the Fourth Proportional to 11,682.15, 16,121.75 and 6,646.25

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Solution

The fourth proportional to 11,682.15, 16,121.75 and 6,646.25 is: 9,172.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,682.15 : 16,121.75 = 6,646.25 : x
  2. Step 2: Convert to fraction form
    11,682.15/16,121.75 = 6,646.25/x
  3. Step 3: Cross multiply
    11,682.15x = 16,121.75 × 6,646.25
  4. Step 4: Simplify right side
    11,682.15x = 107,149,067.10
  5. Step 5: Solve for x
    x = 107,149,067.10/11,682.15
  6. Step 6: Final answer
    x = 9,172.03

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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.