Home / 12,906.54-19,355.49-4,139.37

Finding the Fourth Proportional to 12,906.54, 19,355.49 and 4,139.37

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Solution

The fourth proportional to 12,906.54, 19,355.49 and 4,139.37 is: 6,207.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.54 : 19,355.49 = 4,139.37 : x
  2. Step 2: Convert to fraction form
    12,906.54/19,355.49 = 4,139.37/x
  3. Step 3: Cross multiply
    12,906.54x = 19,355.49 × 4,139.37
  4. Step 4: Simplify right side
    12,906.54x = 80,119,534.64
  5. Step 5: Solve for x
    x = 80,119,534.64/12,906.54
  6. Step 6: Final answer
    x = 6,207.67

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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.