A related information provision system may be used to identify constituent data for a selected portion of summary data on a summary data visualization such as a chart or graph. The portion of the summary data may be selected by a user, a system event, and/or another process. The constituent data may include values and/or metadata for one or more data sets summarized by the summary data, formulas and/or other information, which may indicate how the summary data are obtained from the constituent data. Information regarding the constituent data (“related information”) may be displayed for a user on a constituent visualization or the like. If the information is already displayed, the system may draw the user's attention to the information. If the information is displayed in a different view, the system may display a navigational element leading to it, or direct the user's attention to an existing navigational element.