Home / 11,921.26-16,447.53-6,884.81

Finding the Fourth Proportional to 11,921.26, 16,447.53 and 6,884.81

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Solution

The fourth proportional to 11,921.26, 16,447.53 and 6,884.81 is: 9,498.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.26 : 16,447.53 = 6,884.81 : x
  2. Step 2: Convert to fraction form
    11,921.26/16,447.53 = 6,884.81/x
  3. Step 3: Cross multiply
    11,921.26x = 16,447.53 × 6,884.81
  4. Step 4: Simplify right side
    11,921.26x = 113,238,160.14
  5. Step 5: Solve for x
    x = 113,238,160.14/11,921.26
  6. Step 6: Final answer
    x = 9,498.84

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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.