In exercising the above-mentioned powers, such Board may, in conformity with the provisions of this Chapter, reverse or affirm wholly or partly or may modify the order, requirement, decision or determination appealed from and may make such order, requirement, decision or determination as ought to be made and to that end shall have all the powers of the officer from whom the appeal is taken. The concurring vote of four (4) members of the Board shall be necessary to reverse any order, requirement, decision or determination of any such administrative official or to decide in favor of the application on any matter upon which it is required to pass under any such ordinance or to effect any variation in such ordinance.