Home / 13,160.36-18,155.87-9,183.78

Finding the Fourth Proportional to 13,160.36, 18,155.87 and 9,183.78

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Solution

The fourth proportional to 13,160.36, 18,155.87 and 9,183.78 is: 12,669.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.36 : 18,155.87 = 9,183.78 : x
  2. Step 2: Convert to fraction form
    13,160.36/18,155.87 = 9,183.78/x
  3. Step 3: Cross multiply
    13,160.36x = 18,155.87 × 9,183.78
  4. Step 4: Simplify right side
    13,160.36x = 166,739,515.79
  5. Step 5: Solve for x
    x = 166,739,515.79/13,160.36
  6. Step 6: Final answer
    x = 12,669.83

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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.