Abstract: A ladder platform system and a ladder that uses that system include an elongated first center post that is configured to pass through a first hollow rung of a ladder. In addition, an elongated secondary post is configured to pass through a second hollow rung of the ladder. There is also a pair of short frame members and a pair of long frame members that together form a rectangular frame. The long frame members are attached to the first center post. A first platform is connected to the rectangular frame and an adjustable frame member connects the secondary post to the first center post. In addition, a brace connects a first short frame member to the adjustable frame member.