Home / 13,151.92-18,149.76-7,183.64

Finding the Fourth Proportional to 13,151.92, 18,149.76 and 7,183.64

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Solution

The fourth proportional to 13,151.92, 18,149.76 and 7,183.64 is: 9,913.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.92 : 18,149.76 = 7,183.64 : x
  2. Step 2: Convert to fraction form
    13,151.92/18,149.76 = 7,183.64/x
  3. Step 3: Cross multiply
    13,151.92x = 18,149.76 × 7,183.64
  4. Step 4: Simplify right side
    13,151.92x = 130,381,341.93
  5. Step 5: Solve for x
    x = 130,381,341.93/13,151.92
  6. Step 6: Final answer
    x = 9,913.48

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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.