Home / 12,112.40-18,163.20-5,535.20

Finding the Fourth Proportional to 12,112.40, 18,163.20 and 5,535.20

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Solution

The fourth proportional to 12,112.40, 18,163.20 and 5,535.20 is: 8,300.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.40 : 18,163.20 = 5,535.20 : x
  2. Step 2: Convert to fraction form
    12,112.40/18,163.20 = 5,535.20/x
  3. Step 3: Cross multiply
    12,112.40x = 18,163.20 × 5,535.20
  4. Step 4: Simplify right side
    12,112.40x = 100,536,944.64
  5. Step 5: Solve for x
    x = 100,536,944.64/12,112.40
  6. Step 6: Final answer
    x = 8,300.33

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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.