Home / 11,183.51-16,777.28-9,121.79

Finding the Fourth Proportional to 11,183.51, 16,777.28 and 9,121.79

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Solution

The fourth proportional to 11,183.51, 16,777.28 and 9,121.79 is: 13,684.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,183.51 : 16,777.28 = 9,121.79 : x
  2. Step 2: Convert to fraction form
    11,183.51/16,777.28 = 9,121.79/x
  3. Step 3: Cross multiply
    11,183.51x = 16,777.28 × 9,121.79
  4. Step 4: Simplify right side
    11,183.51x = 153,038,763.85
  5. Step 5: Solve for x
    x = 153,038,763.85/11,183.51
  6. Step 6: Final answer
    x = 13,684.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.