When a posthumous child, or a child, or the issue of a child, omitted in the will, takes under the provisions of § 33-6-23 a portion of the estate of a testator, that portion shall be taken equally from all the devisees and legatees in proportion to the value of what they respectively receive under the will, unless in consequence of a specific devise or legacy, or of some other provision of the will, a different apportionment is found necessary in order to give effect to the testator's intention regarding that part of his or her estate which passes by his or her will.
R.I. Gen. Laws § 33-6-24