Home / 13,151.87-18,149.48-7,183.55

Finding the Fourth Proportional to 13,151.87, 18,149.48 and 7,183.55

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Solution

The fourth proportional to 13,151.87, 18,149.48 and 7,183.55 is: 9,913.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.87 : 18,149.48 = 7,183.55 : x
  2. Step 2: Convert to fraction form
    13,151.87/18,149.48 = 7,183.55/x
  3. Step 3: Cross multiply
    13,151.87x = 18,149.48 × 7,183.55
  4. Step 4: Simplify right side
    13,151.87x = 130,377,631.36
  5. Step 5: Solve for x
    x = 130,377,631.36/13,151.87
  6. Step 6: Final answer
    x = 9,913.24

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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.