Home / 11,137.50-15,369.75-6,661.44

Finding the Fourth Proportional to 11,137.50, 15,369.75 and 6,661.44

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Solution

The fourth proportional to 11,137.50, 15,369.75 and 6,661.44 is: 9,192.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.50 : 15,369.75 = 6,661.44 : x
  2. Step 2: Convert to fraction form
    11,137.50/15,369.75 = 6,661.44/x
  3. Step 3: Cross multiply
    11,137.50x = 15,369.75 × 6,661.44
  4. Step 4: Simplify right side
    11,137.50x = 102,384,667.44
  5. Step 5: Solve for x
    x = 102,384,667.44/11,137.50
  6. Step 6: Final answer
    x = 9,192.79

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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.