Home / 11,138.75-15,371.48-6,662.69

Finding the Fourth Proportional to 11,138.75, 15,371.48 and 6,662.69

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Solution

The fourth proportional to 11,138.75, 15,371.48 and 6,662.69 is: 9,194.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.75 : 15,371.48 = 6,662.69 : x
  2. Step 2: Convert to fraction form
    11,138.75/15,371.48 = 6,662.69/x
  3. Step 3: Cross multiply
    11,138.75x = 15,371.48 × 6,662.69
  4. Step 4: Simplify right side
    11,138.75x = 102,415,372.77
  5. Step 5: Solve for x
    x = 102,415,372.77/11,138.75
  6. Step 6: Final answer
    x = 9,194.51

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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.