Home / 13,183.80-19,775.70-12,108.60

Finding the Fourth Proportional to 13,183.80, 19,775.70 and 12,108.60

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Solution

The fourth proportional to 13,183.80, 19,775.70 and 12,108.60 is: 18,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.80 : 19,775.70 = 12,108.60 : x
  2. Step 2: Convert to fraction form
    13,183.80/19,775.70 = 12,108.60/x
  3. Step 3: Cross multiply
    13,183.80x = 19,775.70 × 12,108.60
  4. Step 4: Simplify right side
    13,183.80x = 239,456,041.02
  5. Step 5: Solve for x
    x = 239,456,041.02/13,183.80
  6. Step 6: Final answer
    x = 18,162.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.