Home / 11,150.85-15,393.07-7,806.79

Finding the Fourth Proportional to 11,150.85, 15,393.07 and 7,806.79

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Solution

The fourth proportional to 11,150.85, 15,393.07 and 7,806.79 is: 10,776.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.85 : 15,393.07 = 7,806.79 : x
  2. Step 2: Convert to fraction form
    11,150.85/15,393.07 = 7,806.79/x
  3. Step 3: Cross multiply
    11,150.85x = 15,393.07 × 7,806.79
  4. Step 4: Simplify right side
    11,150.85x = 120,170,493.95
  5. Step 5: Solve for x
    x = 120,170,493.95/11,150.85
  6. Step 6: Final answer
    x = 10,776.80

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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.