Home / 12,974.45-19,458.43-4,211.87

Finding the Fourth Proportional to 12,974.45, 19,458.43 and 4,211.87

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Solution

The fourth proportional to 12,974.45, 19,458.43 and 4,211.87 is: 6,316.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,974.45 : 19,458.43 = 4,211.87 : x
  2. Step 2: Convert to fraction form
    12,974.45/19,458.43 = 4,211.87/x
  3. Step 3: Cross multiply
    12,974.45x = 19,458.43 × 4,211.87
  4. Step 4: Simplify right side
    12,974.45x = 81,956,269.74
  5. Step 5: Solve for x
    x = 81,956,269.74/12,974.45
  6. Step 6: Final answer
    x = 6,316.75

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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.