Home / 12,911.82-19,367.19-4,146.54

Finding the Fourth Proportional to 12,911.82, 19,367.19 and 4,146.54

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Solution

The fourth proportional to 12,911.82, 19,367.19 and 4,146.54 is: 6,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.82 : 19,367.19 = 4,146.54 : x
  2. Step 2: Convert to fraction form
    12,911.82/19,367.19 = 4,146.54/x
  3. Step 3: Cross multiply
    12,911.82x = 19,367.19 × 4,146.54
  4. Step 4: Simplify right side
    12,911.82x = 80,306,828.02
  5. Step 5: Solve for x
    x = 80,306,828.02/12,911.82
  6. Step 6: Final answer
    x = 6,219.64

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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.