92 12 SCINSC in the diagram, the diagonals of parallelogram KLMN intersect at P \\ produced to S. R is a point on KL and RS cuts PL at T M: MS-4;1, NL-32 units and TL = 12 units. 921 9.2.2 9.2.3 R 12 12 P M S Determine, with reasons, the value of the ratio NP: PT in simplest form. Prove, with reasons, that KM || RS. If NM = 21 units, determine, with reasons, the length of RL. ​