Home / 11,921.92-16,448.64-6,885.52

Finding the Fourth Proportional to 11,921.92, 16,448.64 and 6,885.52

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Solution

The fourth proportional to 11,921.92, 16,448.64 and 6,885.52 is: 9,499.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.92 : 16,448.64 = 6,885.52 : x
  2. Step 2: Convert to fraction form
    11,921.92/16,448.64 = 6,885.52/x
  3. Step 3: Cross multiply
    11,921.92x = 16,448.64 × 6,885.52
  4. Step 4: Simplify right side
    11,921.92x = 113,257,439.69
  5. Step 5: Solve for x
    x = 113,257,439.69/11,921.92
  6. Step 6: Final answer
    x = 9,499.93

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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.