Home / 12,684.21-19,028.03-11,984.70

Finding the Fourth Proportional to 12,684.21, 19,028.03 and 11,984.70

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Solution

The fourth proportional to 12,684.21, 19,028.03 and 11,984.70 is: 17,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.21 : 19,028.03 = 11,984.70 : x
  2. Step 2: Convert to fraction form
    12,684.21/19,028.03 = 11,984.70/x
  3. Step 3: Cross multiply
    12,684.21x = 19,028.03 × 11,984.70
  4. Step 4: Simplify right side
    12,684.21x = 228,045,231.14
  5. Step 5: Solve for x
    x = 228,045,231.14/12,684.21
  6. Step 6: Final answer
    x = 17,978.67

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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.