Home / 13,183.94-18,199.11-7,877.76

Finding the Fourth Proportional to 13,183.94, 18,199.11 and 7,877.76

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Solution

The fourth proportional to 13,183.94, 18,199.11 and 7,877.76 is: 10,874.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.94 : 18,199.11 = 7,877.76 : x
  2. Step 2: Convert to fraction form
    13,183.94/18,199.11 = 7,877.76/x
  3. Step 3: Cross multiply
    13,183.94x = 18,199.11 × 7,877.76
  4. Step 4: Simplify right side
    13,183.94x = 143,368,220.79
  5. Step 5: Solve for x
    x = 143,368,220.79/13,183.94
  6. Step 6: Final answer
    x = 10,874.46

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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.