Home / 13,151.45-18,149.31-7,183.06

Finding the Fourth Proportional to 13,151.45, 18,149.31 and 7,183.06

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Solution

The fourth proportional to 13,151.45, 18,149.31 and 7,183.06 is: 9,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.45 : 18,149.31 = 7,183.06 : x
  2. Step 2: Convert to fraction form
    13,151.45/18,149.31 = 7,183.06/x
  3. Step 3: Cross multiply
    13,151.45x = 18,149.31 × 7,183.06
  4. Step 4: Simplify right side
    13,151.45x = 130,367,582.69
  5. Step 5: Solve for x
    x = 130,367,582.69/13,151.45
  6. Step 6: Final answer
    x = 9,912.79

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Half scale
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Double scale
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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.