Home / 12,206.99-18,313.25-4,415.81

Finding the Fourth Proportional to 12,206.99, 18,313.25 and 4,415.81

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Solution

The fourth proportional to 12,206.99, 18,313.25 and 4,415.81 is: 6,624.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.99 : 18,313.25 = 4,415.81 : x
  2. Step 2: Convert to fraction form
    12,206.99/18,313.25 = 4,415.81/x
  3. Step 3: Cross multiply
    12,206.99x = 18,313.25 × 4,415.81
  4. Step 4: Simplify right side
    12,206.99x = 80,867,718.84
  5. Step 5: Solve for x
    x = 80,867,718.84/12,206.99
  6. Step 6: Final answer
    x = 6,624.71

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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.