Home / 13,151.66-18,149.60-7,183.37

Finding the Fourth Proportional to 13,151.66, 18,149.60 and 7,183.37

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Solution

The fourth proportional to 13,151.66, 18,149.60 and 7,183.37 is: 9,913.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.66 : 18,149.60 = 7,183.37 : x
  2. Step 2: Convert to fraction form
    13,151.66/18,149.60 = 7,183.37/x
  3. Step 3: Cross multiply
    13,151.66x = 18,149.60 × 7,183.37
  4. Step 4: Simplify right side
    13,151.66x = 130,375,355.48
  5. Step 5: Solve for x
    x = 130,375,355.48/13,151.66
  6. Step 6: Final answer
    x = 9,913.23

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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.