Decision by Board. The Board shall decide appeals within a reasonable time. Any party to the appeal may appear in person or by agent or attorney at any hearing. The Board may, upon the concurring vote of four (4) members, reverse or affirm, in whole or in part, or modify the administrative official's order, requirement or decision, and make the correct order, requirement, decision, or determination on the matter appealed from and shall make such order, requirement, decision or determination as in its opinion ought to be made, and to that end, shall have all powers of the officer or department from whom the appeal is taken.