An information processing apparatus includes circuitry. The circuitry receives an input of ledger sheet image data read from a ledger sheet. The circuitry identifies, among a plurality of character strings extracted through character recognition performed on the ledger sheet image data, a reference point character string based on relative positions of the reference point character string and a particular character string of the plurality of character strings. The reference point character string forms a reference point for extraction. The circuitry extracts a corresponding character string corresponding to the reference point character string based on relative positions of the corresponding character string and the reference point character string.