Home / 12,379.05-18,564.84-4,480.68

Finding the Fourth Proportional to 12,379.05, 18,564.84 and 4,480.68

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Solution

The fourth proportional to 12,379.05, 18,564.84 and 4,480.68 is: 6,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379.05 : 18,564.84 = 4,480.68 : x
  2. Step 2: Convert to fraction form
    12,379.05/18,564.84 = 4,480.68/x
  3. Step 3: Cross multiply
    12,379.05x = 18,564.84 × 4,480.68
  4. Step 4: Simplify right side
    12,379.05x = 83,183,107.29
  5. Step 5: Solve for x
    x = 83,183,107.29/12,379.05
  6. Step 6: Final answer
    x = 6,719.67

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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.