Home / 12,138.05-18,206.51-3,253.37

Finding the Fourth Proportional to 12,138.05, 18,206.51 and 3,253.37

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Solution

The fourth proportional to 12,138.05, 18,206.51 and 3,253.37 is: 4,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.05 : 18,206.51 = 3,253.37 : x
  2. Step 2: Convert to fraction form
    12,138.05/18,206.51 = 3,253.37/x
  3. Step 3: Cross multiply
    12,138.05x = 18,206.51 × 3,253.37
  4. Step 4: Simplify right side
    12,138.05x = 59,232,406.14
  5. Step 5: Solve for x
    x = 59,232,406.14/12,138.05
  6. Step 6: Final answer
    x = 4,879.90

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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.