Home / 11,339.99-15,650.91-8,163.80

Finding the Fourth Proportional to 11,339.99, 15,650.91 and 8,163.80

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Solution

The fourth proportional to 11,339.99, 15,650.91 and 8,163.80 is: 11,267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,339.99 : 15,650.91 = 8,163.80 : x
  2. Step 2: Convert to fraction form
    11,339.99/15,650.91 = 8,163.80/x
  3. Step 3: Cross multiply
    11,339.99x = 15,650.91 × 8,163.80
  4. Step 4: Simplify right side
    11,339.99x = 127,770,820.80
  5. Step 5: Solve for x
    x = 127,770,820.80/11,339.99
  6. Step 6: Final answer
    x = 11,267.28

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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.