Home / 13,176.05-18,183.21-7,207.70

Finding the Fourth Proportional to 13,176.05, 18,183.21 and 7,207.70

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Solution

The fourth proportional to 13,176.05, 18,183.21 and 7,207.70 is: 9,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.05 : 18,183.21 = 7,207.70 : x
  2. Step 2: Convert to fraction form
    13,176.05/18,183.21 = 7,207.70/x
  3. Step 3: Cross multiply
    13,176.05x = 18,183.21 × 7,207.70
  4. Step 4: Simplify right side
    13,176.05x = 131,059,122.72
  5. Step 5: Solve for x
    x = 131,059,122.72/13,176.05
  6. Step 6: Final answer
    x = 9,946.77

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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.