Home / 13,183.09-18,193.88-7,877.79

Finding the Fourth Proportional to 13,183.09, 18,193.88 and 7,877.79

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Solution

The fourth proportional to 13,183.09, 18,193.88 and 7,877.79 is: 10,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.09 : 18,193.88 = 7,877.79 : x
  2. Step 2: Convert to fraction form
    13,183.09/18,193.88 = 7,877.79/x
  3. Step 3: Cross multiply
    13,183.09x = 18,193.88 × 7,877.79
  4. Step 4: Simplify right side
    13,183.09x = 143,327,585.62
  5. Step 5: Solve for x
    x = 143,327,585.62/13,183.09
  6. Step 6: Final answer
    x = 10,872.08

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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.