Home / 12,299.15-18,458.55-6,377.72

Finding the Fourth Proportional to 12,299.15, 18,458.55 and 6,377.72

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Solution

The fourth proportional to 12,299.15, 18,458.55 and 6,377.72 is: 9,571.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.15 : 18,458.55 = 6,377.72 : x
  2. Step 2: Convert to fraction form
    12,299.15/18,458.55 = 6,377.72/x
  3. Step 3: Cross multiply
    12,299.15x = 18,458.55 × 6,377.72
  4. Step 4: Simplify right side
    12,299.15x = 117,723,371.21
  5. Step 5: Solve for x
    x = 117,723,371.21/12,299.15
  6. Step 6: Final answer
    x = 9,571.67

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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.